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1
Content available Assessment of Quality of EN AC-43300 Alloy with Use of ATND Method
Pezda J.
Archives of Foundry Engineering
|
2013
|
Vol. 13, iss. 1 spec.
139--142
EN
Application of the silumins expands together with nowadays tendency to reduction of design structures mass. Technological and mechanical properties of Al-Si casting alloys depend mainly from structure of eutectic mixture, which is modified in result of introduction of micro alloying elements to liquid alloy, and that is why proper use of knowledge on crystallization to control of crystallization kinetics of produced alloys to optimize obtained structure is a significant factor leading to improvement of quality of the castings. In the paper one depicts use of the ATND method (thermal-voltage-derivative analysis) and regression analysis to assessment of quality of the EN AC-43300 alloy modified with strontium on stage of its preparation, in aspect of obtained mechanical properties (R0,02, R0,2, Rm, A5). Obtained dependencies enable prediction of mechanical properties of the investigated alloy, basing on values of characteristic points from the ATND method.
2
Content available Determination of Rm tensile strength of Al-Si alloys with use of ATND method
Pezda J.
Advances in Manufacturing Science and Technology
|
2013
|
Vol. 37, nr 1
99—109
EN
In the paper is presented an attempt of assessment of melting and modification effect on Rm tensile strength of Al-Si alloys poured into metallic moulds. Investigated alloys underwent refining and modification with AlSr10 master alloy. Run of the crystallization process was presented with the help of solidification curves, making use of thermal-voltage-derivative analysis (ATND). Obtained results comprise registered curves of solidification, strength tests, microstructure of the alloy and regression analysis. On base of performed regression analysis one obtained a dependencies enabling evaluation of Rm tensile strength of Al-Si alloys as early as on stage of their preparation (melting).
PL
W pracy przedstawiono próbę oceny wpływu warunków procesu topienia i modyfikacji na wytrzymałość na rozciąganie Rm stopów Al-Si odlewanych do form metalowych. Stopy Al-Si poddano rafinacji i modyfikacji zaprawą AlSr10. Przebieg procesu krystalizacji charakteryzowano za pomocą krzywych krystalizacji. Stosowano metodę analizy termiczno-napięciowo-derywacyjnej (ATND). Wykonano próbę statyczną rozciągania oraz badania mikroskopowe wytworzonych stopów Al-Si. Analiza regresji stanowiła podstawę do uzyskania zależności pozwalającej określić prognozowaną wytrzymałość na rozciąganie Rm stopów Al-Si w procesie topienia i krystalizacji.
3
Content available Analysis of Al-Mg casting alloys crystallization with use of ATND method
Ciućka T.
Advances in Manufacturing Science and Technology
|
2013
|
Vol. 37, nr 1
111—118
EN
The paper presents results of non-ferrous metals crystallization tests performed with use of the ATND method. Method of analysis of non-ferrous metals crystallization gives complete picture of arisen structural components of alloys. Particular structural components of alloys investigated with use of the ATND method were verified in x-ray microanalysis, what unequivocally confirmed their presence. Below are presented in graphical form (crystallization diagrams) results of crystallization process obtained from the ATND method. In crystallization diagrams of AG 10 and AG51 alloys are shown curves (thermal curve and its derivative, voltage curve and its derivative). Crystallizable individual structural components of the investigated alloys are reflected on curves of the method in form of characteristic peaks. The tests were performed with AG 10 and AG51 aluminum-magnesium casting alloys. Moreover, the paper presents structures of the investigated alloys with marked structural components identified with use of x-ray microanalysis.
PL
W pracy przedstawiono analizę wyników badań metodą ATND procesu krystalizacji stopów metali nieżelaznych. Analiza procesu krystalizacji tych stopów umożliwia charakterystykę powstających składników fazowych ich mikrostruktury. Składniki fazowe mikrostruktury badanych stopów określone metodą ATND zweryfikowano metodą mikroanalizy rentgenowskiej. Przedstawiono krzywe krystalizacji stopów magnezu AG10 i AG51 w zależności od temperatury i czasu, określono efekty cieplne i napięciowe. Ustalone wartości temperatury i napięcia użyto w obliczeniach matematycznych, w analizie regresji w celu określenia wartości temperatury krystalizacji składników fazowych badanych stopów. Wykonano badania mikroskopowe stopów AG10 i AG51.
4
Content available Registration of melting and crystallization process of ultra-light weight MgLi12,5 alloy with use of ATND method
Białobrzeski A., Pezda J.
Archives of Foundry Engineering
|
2012
|
Vol. 12, iss. 2
143-146
EN
To the main advantages of magnesium alloys belongs their low density, and just because of such property the alloys are used in aviation and rocket structures, and in all other applications, where mass of products have significant importance for conditions of their operation. To additional advantages of the magnesium alloys belongs good corrosion resistance, par with or even surpassing aluminum alloys. Magnesium is the lightest of all the engineering metals, having a density of 1.74 g/cm3. It is 35% lighter than aluminum (2.7 g/cm3) and over four times lighter than steel (7.86 g/cm3). The Mg-Li alloys belong to a light-weight metallic structural materials having mass density of 1.35-1.65 g/cm3, what means they are two times lighter than aluminum alloys. Such value of mass density means that density of these alloys is comparable with density of plastics used as structural materials, and therefore Mg-Li alloys belong to the lightest of all metal alloys. In the present paper are discussed melting and crystallization processes of ultra-light weight MgLi12,5 alloys recorded with use of ATND methods. Investigated magnesium alloy was produced in Krakow Foundry Research Institute on experimental stand to melting and casting of ultra-light weight alloys. Obtained test results in form of recorded curves from ATND methods have enabled determination of characteristic temperatures of phase transitions of the investigated alloy.
5
Content available remote Registration of melting and crystallization process of synthetic MgLi3,5 alloy with use of ATND method
Białobrzeski A., Pezda J.
Archives of Foundry Engineering
|
2011
|
Vol. 11, iss. 4
5-8
EN
Contemporary requirements, which face machinery components and structures effect in necessity of searching after, and implementation of a new materials having significant effect on improvement of product quality, minimization of its dimensions and mass, as well as assuring reliability in operational conditions. Magnesium alloys belong to the lightest metallic structural materials and hence, are very attractive in such applications as automotive and aerospace industries, among others. Furthermore, addition of lithium, that has density of 0,53 g/cm3, reduces density of the resulting Mg-Li alloys to the same level as polymeric materials. Therefore, Mg-Li alloys become an alternative material assuring low density, improved ductility and corrosion resistance. The paper presents an attempt of implementation of the ATND method to monitoring of crystallization process of synthetic MgLi3,5 alloy. Investigated magnesium alloys were produced in the Foundry Research Institute. Registration of melting and crystallization processes was made with use of the ATND method. Results of the preliminary tests are shown in a graphical form.
6
Content available remote Analysis of AlSi9Mg alloy crystallization with use of ATND method
Ciućka T.
Advances in Manufacturing Science and Technology
|
2009
|
Vol. 33, nr 2
65-70
EN
The paper discusses crystallization research aluminum-silicon casting alloy (AlSi9Mg) with use of Thermal-Voltage-Derivative Analysis method (ATND). Method of analysis of non-ferrous metals crystallization assures comprehensive image of formed structural components of the alloy. Below are shown results of crystallization analysis of ATND method in graphic form (crystallization diagrams). In the crystallization diagrams of the AlSi9Mg alloy are presented thermal and voltage curves with their derivative. Individual structural constituents crystallizable in the investigated alloy are reflected on curves of the method in form of characteristic peaks. Moreover, the paper presents structures of the investigated alloy togegther with marked structural constituents which were identified with use of X-ray microanalysis.
PL
W pracy przedstawiono wyniki badań procesu krystalizacji stopu AlSi9Mg metodą Analizy Termiczno-Napięciowo-Derywacyjnej (ATND). Metoda ATND daje pełny obraz powstających składników strukturalnych stopu. Wyniki analizy krystalizacji przedstawiono w postaci graficznej (wykresów krystalizacji). Wykresy krystalizacji stopu AlSi9Mg obejmują krzywą termiczną wraz z jej pochodną oraz krzywą napięciową i jej pochodną. Krystalizujące składniki strukturalne w badanym stopie są odzwierciedlone na krzywych metody ATND w postaci charakterystycznych pików. Wykonano badania mikrostruktury stopu i określono jej składniki fazowe identyfikowane metodą mikroanalizy rentgenowskiej.
7
Content available remote Testing of heating and cooling process of ADI cast iron with use of ATND method
Białobrzeski A., Pezda J.
Archives of Foundry Engineering
|
2008
|
Vol. 8, iss. 3
11-14
EN
ADI (Austempered Ductile Iron) cast iron, owing to its unique combination of high tensile strength and abrasion resistance with very good plasticity, founds implementation in many branches of industry as a substitute of alloy cast steel and carburized or heat treated steels. In spite of its solid position among producers and recipients of castings, there are still undertaken studies aimed at perfection of its properties and recognition of mechanisms enabling obtaining such properties. The paper presents implementation of thermal-voltage-derivative (ATND) method to registration of heating and cooling course of ADI cast iron with EN-GJS-1200-2 grade. ADI cast iron with EN-GJS-1200-2 grade underwent the study. Heat treatment of the cast iron was performed in Foundry Institute with use of LT ADI-350/1000 processing line. Results obtained from the testing illustrate in graphic form registered heating and cooling curves of investigated cast irons obtained with use of the ATND method.
8
Content available remote Heat treatment of AlSi9Mg alloy
Pezda J.
Archives of Foundry Engineering
|
2008
|
Vol. 8, iss. 1
169-172
EN
Processes of crystallization of alloys have decisive impact on structure of castings, and the same their utility characteristics. Knowledge about those processes constitutes a source of information to development of preparation of liquid metal and control of alloy preparation process within industry. Method of Thermal-Voltage-Derivative Analysis (ATND), developed by Faculty of Chipless Forming Technology enables registration of temperature and voltage curves, on which one can observe thermal and voltage effects being result of crystallization of phases and eutectic mixtures present on these curves in form of characteristic "peaks". Temperature value read offs for these characteristic points become a basis to taking regression analysis aimed at obtaining of mathematical dependences illustrating effect of changes of these values on change of impact resistance of dispersion hardened AK9 alloy. The paper presents an attempt of implementation of Thermal-Voltage-Derivative Analysis method to determination of temperature of hyperquenching and ageing processes of AK9 (AlSi9Mg) silumin. Investigated alloy had undergone typical treatments of refining and modification, and next the heat treatment. Temperature range for the heat treatment has been determined on base of ATND melting curves.
9
Content available remote Determination of impact strength of AK9 silumin on base of ATND method
Pezda J.
Archives of Foundry Engineering
|
2008
|
Vol. 8, iss. 1 spec.
269--272
EN
In order to obtain the best possible materials structure for a given requirements, taking full advantage of knowledge on theories of crystallization to control of technological processes becomes a substantial factor during production of castings. Knowledge on run of the processes is a source of information for development of technology to preparation of liquid metal and to control of preparation of alloys within industry. A method of Thermal-Voltage-Derivative Analysis (ATND), developed in the Faculty of Chipless Forming Technology enables registration of temperature and voltage curves, on which one can observe a thermal and voltage effects being result of crystallization of phases and eutectic mixtures seen on these curves in form of characteristic “peaks”. Temperature value read offs for these characteristic points become a basis to regression analysis aimed at obtaining a mathematical dependences illustrating effect of changes of these values on change of impact strength of AK9 alloy. The paper presents crystallization curves of the investigated alloy registered with use of the ATND method and shows results of regression analysis aimed at determination of correlation between values of characteristic points on crystallization curve (ATND method) and KCV impact strength of the investigated alloy. It has enabled to describe significantly by equation, estimated impact strength of AK9 alloy, basing on characteristic points of the ATND method in laboratory conditions at significance level of [...] = 0,05.
PL
Istotnym czynnikiem w produkcji odlewów staje się wykorzystanie teorii procesów krystalizacji do sterowania procesami technologicznymi, w celu uzyskania najlepszej struktury materiału dla konkretnych wymagań. Znajomość przebiegu tych procesów jest źródłem informacji dla rozwoju przygotowania ciekłego metalu oraz kontroli przygotowania stopów w przemyśle. Metoda Analizy Termiczno-Napięciowo-Derywacyjnej opracowana w Zakładzie Technologii Bezwiórowych pozwala na rejestracje krzywych temperaturowych i napięciowych, na których można zaobserwować efekty cieplne i napięciowe będące skutkiem krystalizacji faz i eutektyk, występujące na tych krzywych w formie charakterystycznych „pików”. Wartości temperatury i napięcia odczytane dla tych punktów charakterystycznych stają się podstawą do podjęcia analizy regresji dla uzyskania zależności matematycznych przedstawiających wpływ zmian ich wielkości na zmianę udarności stopu AK9. W artykule przedstawiono zarejestrowane krzywe krystalizacji badanego stopu za pomocą metody ATND oraz wykorzystano analizę regresji w celu ustalenia korelacji pomiędzy wartościami punktów charakterystycznych z krzywych krystalizacji (metoda ATND) i udarnością KCV badanego stopu. Pozwoliło to na opisanie w sposób istotny równaniem szacującym udarność stopu AK9 na podstawie punktów charakterystycznych metody ATND w warunkach doświadczalnych przy poziomie istotności [...] = 0,05.
10
Content available remote Analysis of Al-Mg casting alloys crystallization with use of "ATND" method
Ciućka T.
Archives of Foundry Engineering
|
2008
|
Vol. 8, iss. 4
27-30
EN
The paper presents results of non-ferrous metals crystallization tests performed with use of the ATND method. Such tests are performed in the Institute of Chipless Technology, Academy of Technology and Humanities in Bielsko-Biala. Method of analysis of non-ferrous metals crystallization gives complete picture of arisen structural components of alloys. Particular structural components of alloys investigated with use of the ATND method were verified in X-ray microanalysis, what unequivocally confirmed their presence. Below are presented in graphical form (crystallization diagrams) results of crystallization process obtained from the ATND method. In crystallization diagrams of AlMg10 and AG51 alloys are shown curves (thermal curve and its derivative, voltage curve and its derivative). Crystallizable individual structural components of the investigated alloys are reflected on curves of the method in form of characteristic peaks. The tests were performed with AlMg10 and AlMg5Si1 aluminum-magnesium alloys casting. Moreover, the paper presents structures of the investigated alloys with marked structural components identified with use of X-ray microanalysis.
11
Content available remote Registration of crystallization process of ultra-lightweight Mg-Li alloys with use of ATND method
Białobrzeski A., Pezda J., Ciućka T.
Archives of Foundry Engineering
|
2007
|
Vol. 7, iss. 3
17-20
EN
Magnesium alloys are characterized by advantageous ratio of strength and/or elastic modulus to density, that is, can sustain static and dynamic loads similar to iron and aluminium, and additionally feature good vibration damping. Castings from magnesium alloys are lighter with about 20 - 30% than aluminium alloys and with 50 – 75% than iron alloys, that is why they are used in aviation and rocket industry and everywhere the weight of a product is of important significance for conditions of its operation. Also automotive industry introduces to vehicle’s structure an elements (castings) manufactured from such alloys. On metallic matrix of magnesium alloys with lithium are also manufactured a composites reinforced with e.g. ceramic fiber, which are used as lightweight and resistant structure materials. The paper presents an attempt of implementation of ATND method (Thermal-Voltage-Derivative Analysis) to monitoring of crystallization process of ultra-lightweight Mg-Li alloys. Investigated magnesium alloys with contents of about 2,3% Li, 10% Li and 11 % Li were produced in the Foundry Research Institute. Registration of melting and crystallization processes was made with use of the ATND method. Results of preliminary tests are shown in graphical form.
12
Content available remote Crystallization analysis of AlSi7Mg (AK 7) alloy with use of "ATND" method
Ciućka T.
Archives of Foundry Engineering
|
2007
|
Vol. 7, iss. 4
25-28
EN
The paper presents results of non-ferrous metal crystallization research with use of ATND method. The research was carried out in the Faculty of Chipless Forming Technology, University of Bielsko-Biała. The new method of analysis of non-ferrous metals alloy crystallization assures complete picture of generated structural components of the alloy. Structural components defined in the tested alloy using ATND method have been verified by X-ray microanalysis, which unambiguously has confirmed their presence. Below are presented results of the crystallization analysis with ATND method in graphic form (crystallization diagrams). In crystallization diagrams of AK7 alloy there were shown curves (thermal curve with its derivative, voltage curve and its derivative). Individual structural components crystallizing in the tested alloy are reflected on curves of the method in form of characteristic peaks. The research was carried out on AK7 aluminum cast alloy. Moreover, the paper shows the structures of the tested alloy together with marked structural components, identified with use of X-ray microanalysis.
13
Content available remote Crystallization analysis of AlMg (AG 10) alloy with use of ATND method
Ciućka T.
Archives of Foundry Engineering
|
2007
|
Vol. 7, iss. 1
61-64
EN
The paper presents results of non-ferrous metal crystallization research with use of ATND method. The research was carried out in the Faculty of Chipless Forming Technology, University of Bielsko-Biała. The new method of analysis of non-ferrous metals alloy crystallization assures complete picture of generated structural components of the alloy. Structural components defined in the tested alloy using ATND method have been verified by X-ray microanalysis, which unambiguously has confirmed their presence. Below are presented results of the crystallization analysis with ATND method in graphic form (crystallization diagrams). In crystallization diagrams of AG10 alloy there were shown curves (thermal curve with its derivative, voltage curve and its derivative). Individual structural components crystallizing in the tested alloy are reflected on curves of the method in form of characteristic peaks. The research was carried out on AG10 aluminum-magnesium cast alloy. Moreover, the paper shows the structures of the tested alloy together with marked structural components, identified with use of X-ray microanalysis.
14
Content available remote Wytrzymałość na rozciąganie stopu AG10 określana metodą ATND
Pezda J.
Archiwum Odlewnictwa
|
2006
|
R. 6, nr 18/1
197--202
PL
W artykule przedstawiono próbę zastosowania jednoczesnej metody Analizy Termiczno-Napięciowo Derywacyjnej do określenia wytrzymałości na rozciąganie Rm stopu AG10. Badany stop topiono w elektrycznym piecu oporowym. Następnie przeprowadzono rejestrację krystalizacji metodą ATND oraz analizę regresji dla uzyskania równania do określania wytrzymałości na rozciąganie Rm.
EN
The evaluation test of mechanical properties of the AG10 have been described in this paper. The characteristics points obtained from the solidification curves and from the voltage curves, as well from their derivatives have been determined on the state of the solidification and crystallization curves using the metode simultaneous recording ATND.
15
Content available remote Właściwości mechaniczne siluminu AK132 określane metodą ATND
Pezda J.
Archiwum Odlewnictwa
|
2006
|
R. 6, nr 19
221-226
PL
W artykule przedstawiono zastosowanie metody Analizy Termiczno-Napięciowo-Derywacyjnej do określenia właściwości mechanicznych siluminu AK132 (Al-Si13Cu2). Badany stop topiono w elektrycznym piecu oporowym. Następnie przeprowadzono rejestrację krystalizacji metodą ATND oraz analizę regresji dla uzyskania zależności do określania właściwości mechanicznych.
EN
The evaluation test of mechanical properties of the AK132 have been described in this paper. The characteristics points obtained from the solidification curves and from the voltage curves, as well from their derivatives have been determined on the state of the solidification and crystallization curves using the metode simultaneous recording ATND.
16
Content available remote Rejestracja krystalizacji odlewniczego stopu AG51 (AlMg5Si1) metodą „ATND”
Ciućka T.
Archiwum Odlewnictwa
|
2006
|
R. 6, nr 18/1
191--196
PL
W artykule przedstawiono przykład zastosowania nowej metody ATND do badań krystalizacji stopów metali nieżelaznych. Badania prowadzono na odlewniczym stopie AG51 (AlMg5Si1).
EN
New ATND technique used to evaluate the phase composition in AlMg5Si1 alloy was presented. The characteristic points were obtained from solidification curves and from milivoltage curves as well as from their derivatives of solidification and crystallization curves with ATND method.
17
Content available remote Krzywe procesu krystalizacji syntetycznego stopu odlewniczego na bazie aluminium (AlCu7Ni5Fe3) metodą "ATND"
Ciućka T.
Archiwum Odlewnictwa
|
2006
|
R. 6, nr 19
49-54
PL
W artykule przedstawiono przykład zastosowania metody ATND do badań krystalizacji stopów metali nieżelaznych, jak również próby określania powstających składników stopowych. Badania prowadzone były na syntetycznym stopie na bazie aluminium AlCu7Ni5Fe3.
EN
New ATND technique used to evaluate the phase composition in AlCu7Ni5Fe3 alloy was presented. The characteristic points were obtained from solidification curves and from milivoltage curves as well as from their derivatives of solidification and crystallization curves with ATND method.
18
Content available remote Rejestracja procesu krystalizacji syntetycznego stopu AICu7Ni5Fe3 metodą "ATND"
Ciućka T.
Archiwum Odlewnictwa
|
2004
|
R. 4, nr 14
120-125
PL
W artykule przedstawiono przykład zastosowania nowej metody ATND do badań krystalizacji stopów metali nieżelaznych. Badania prowadzone były na syntetycznym stopie aluminium AICu7Ni5Fe3.
EN
New ATND technique used to evaluate the phase composition in AICu7Ni5Fe3 alloy was presented. The characteristic points were obtained from solidification curves and from milivoltage curves as well as from their derivatives of solidification and crystallization curves with ATND method.
19
Content available remote Szacowanie własności mechanicznych siluminu AK9 na podstawie metody ATND
Pezda J., Ciućka T., Białobrzeski A.
Archiwum Odlewnictwa
|
2003
|
R. 3, nr 10
105--111
PL
W artykule przedstawiono próbę zastosowania metody analizy napięciowo derywacyjnej do określenia własności mechanicznych siluminu AK9 (Rm). Badany stop został poddany typowym zabiegom rafinacji i modyfikacji. Następnie została przeprowadzona analiza regresji w celu uzyskania równania do szacowania wytrzymałości na rozciąganie Rm.
EN
The evaluation test of mechanical properties of the AK9 have been described in this paper. The characteristics points obtained from the solidification curves and from the voltage curves, as well from their derivatives have been determined on the state of the solidification and crystallization curves using the metode simultaneous recording ATND.
20
Content available remote Rejestracja procesu krystalizacji syntetycznego stopu AlNi5,0 metodą „ATND”
Ciućka T., Pezda J., Białobrzeski A.
Archiwum Odlewnictwa
|
2003
|
R. 3, nr 9
95--100
PL
W artykule przedstawiono przykład zastosowania nowej metody ATND do badań krystalizacji stopów metali nieżelaznych. Badania prowadzone były na syntetycznym stopie aluminium z niklem AlNi5,0.
EN
New ATND technique used to evaluate the phase composition in AlNi5,0 alloy was presented. The characteristic points were obtained from solidification curves and from milivoltage curves as well as from their derivatives of solidification and crystallisation curves with ATND method.
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