Ograniczanie wyników
Czasopisma help
Lata help
Autorzy help
Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Znaleziono wyników: 33
first rewind previous Strona / 2 next fast forward last
Wyszukiwano:
w słowach kluczowych:  węglik
help Sortuj według:

help Ogranicz wyniki do:
1
100%
Archives of Materials Science and Engineering
EN Purpose: The main purpose of the hereby paper was the determination of the temperature and time of solution heat treatment influence on a microstructure and hardness of the newly designed model alloy, being the model Ni-based tool material - intended for operations at high temperatures - strengthene[...]
2
100%
Archives of Materials Science and Engineering
EN Purpose: The concept of new tool materials, based on Ni alloys strengthened by intermetallic compounds, intended for operations in high temperatures is presented in the hereby paper. The proposed chemical composition and the results of microstructure investigations as well as hardness testing in as-[...]
3
100%
Krzepnięcie Metali i Stopów
2000 R. 2, nr 42 95--103
PL W pracy przedstawiono wyniki badań mikrostruktury trzech austenitycznych staliw typu 18/30 z dodatkami Nb i Ti poddanych procesowi wyżarzania - 900ºC/300 godz. Stopy zawierały kolejno (% mas.): 1.75% Nb i 0.83% Ti, 1% Ti oraz 1.71% Nb. W badaniach zastosowano mikroskopię świetlną i skaningową, mikro[...]
EN The microstructure of three austenitic cast steels type 18/30 with additions of Nb and Ti after annealing at 900ºC/300h has been presented in this paper. The contents of Nb and Ti in tested alloys have been changed as follows (wt-%): 1.75% Nb and 0.83 % Ti, 1% Ti and 1.71% Nb. Microstructural studie[...]
4
100%
Archiwum Odlewnictwa
2002 R. 2, nr 4 50--55
PL W artykule przedstawiono wyniki badań mikrostruktury wysokochromowego żeliwa białego o następującym składzie chemicznym (%mas.): 2,2%C, 22%Cr, 0,3%Si, 0,01%Al 0,028%P, 0,023%S dla różnych grubości ścianek odlewu (6, 12, 18, 24, 30mm). Na podstawie wyników badań określono wpływ grubości ścianki na mo[...]
EN In the article the author has presented the results of the research on microstructure of high chromium white cast iron consisting of 2,2%C, 22%Cr, 0,3%Si, 0,01%Al 0,028%P, 0,023%S obtained for different thickness of the casting wall. An influence of wall thickness on the morphology of carbide phase [...]
5
100%
Archiwum Odlewnictwa
2002 R. 2, nr 4 332--339
PL W pracy analizowano wpływ podstawowych składników chemicznych staliwa austenitycznego na wzrost jego odporności na nawęglanie w temperaturze 900°C i przy potencjale węglowym atmosfery 0.9%. Wykazano, że przyrost masy próbek jest kontrolowany głównie zawartością niklu, krzemu i początkową ilością węg[...]
EN The study examines an effect of the basic chemical constituents in austenitic cast steel on an increase in its carburising resistance at a temperature of 900°C and with the carbon potential of atmosphere equal to 0.9%. It has been proved that the increment in sample weight is controlled mainly by th[...]
6
84%
Archives of Civil and Mechanical Engineering
2012 Vol. 12, no. 2 171--177
EN The most popular prosthetic restorations are skeletal dentures. Clinical failures in the case of these prostheses are associated primarily with the accuracy and precision of the design, and laboratory procedures such as: melting and casting technique as well as the quantity of the once remelted allo[...]
7
84%
Archiwum Odlewnictwa
2006 R. 6, nr 18/1 459--464
PL W pracy przedstawiono wpływ zawartości węgla na strukturę i wybrane własności staliwa GX2CrNiMoCu25-6-3-3 po obróbce cieplnej. Stwierdzono, że po zabiegu przesycania staliwo charakteryzuje się strukturą ferrytyczno-austenityczną, a poprzez odpowiedni dobór temperatury przesycania sterować można wzaj[...]
EN The effect of carbon content on the structure, hardness and impact resistance of GX2CrNiMoCu25-6-3-3 cast steel was discussed. After the solution heat treatment the cast steel have a ferritic-austenitic two-phase structure, and one of the main purposes of solutioning is to obtain the required amount[...]
8
84%
Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The purpose of this study was using of transmission electron microscopy (TEM) and differential scanning calorimetry (DSC) in order to reveal the changes in substructure of speed steel made with deep cryogenic treatment (DCT), in comparison with substructure formed by conventional heat treat[...]
9
84%
Archives of Foundry Engineering
EN In view of quite specific physico-chemical and performance properties, the composite based on an intermetallic Ni3Al compound reinforced with tungsten carbides (WC) was selected for investigations. The said composite is characterised by very good mechanical and tribological properties within a wide [...]
10
84%
Archives of Foundry Engineering
EN The paper presents results of research on precipitation processes in chromium - molybdenum - vanadium cast steel. The examined material was the following cast steel grade: L21HMF and G17CrMoV5 - 10 (L17HMF) after long-term operation at elevated temperatures and after regenerative heat treatment. Ide[...]
11
84%
Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: Improvement of surface properties of X38CrMoV5-3 is one of the goals set to the research institutions active in this paper. Design/methodology/approach: Remelting and alloying of surface layers were made using the HPDL high power diode laser Rofin DL 020 in the laser power range of 1.2-2.3[...]
12
84%
Hutnik, Wiadomości Hutnicze
PL W pracy określono kinetykę przemian fazowych przy nagrzewaniu ciągłym (odpuszczaniu) ze stanu zahartowanego w postaci wykresu CTPc stopni (Czas - Temperatura - Przemiana) nowej stali stopowej zawierającej 1,22 %C. Na dylatogramach nagrzewania ze stanu zahartowanego wskazano temperatury charakterysty[...]
EN In the paper kinetics of phase transformations during continuous heating (tempering) from the hardened condition has been specified in from of a CHT diagram (Continuous Heating Transformations) of a new alloy steel containing 1,22 %C. In the dilatograms of heating from hardened condition characteris[...]
13
84%
Inżynieria Materiałowa
1998 R. XIX, nr 3 396-399
EN A carbide dispersion in steel can be approximated by system of spheres with sphere density NV and volume fraction VV. Any plane section of the system is characterised by the profile density NA. If the sphere diameters follow the Rayleigh distribution a simple stereological equation, which satisfies[...]
14
84%
Archives of Foundry Engineering
EN The study presents a new approach to the mechanism of isothermal transformation in ADI. The discussion was based on the results of calorimetric analysis of the thermal effects that take place in the specimen when heated after austempering and on the results of analysis of the phase composition of ca[...]
15
84%
Krzepnięcie Metali i Stopów
1998 nr 36 159--166
PL Przy użyciu skaningowej mikroskopii elektronowej i analizy składu chemicznego w mikroobszarach badano zmiany morfologii i składu chemicznego węglików w stopie typu vitalium, o różnej zawartości niklu, w stanie lanym. Wykazano, że w stanie lanym cząstki węglików wykazują dwoistą budowę - występują w [...]
EN Changes of morphology and chemical compositions of carbides in vitalium type cobalt alloy in dependence of nickel's capacity were investigated on the base of SEM and EDX results. It was found that alredy in cast condition particles of carbides occured in massive or in lamelar form. The fractions of [...]
16
84%
Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The objective of this work was to present the changes between the plasma sprayed and high velocity oxy-fuel (HVOF) wear Cr3C2 resistant coats. The differences in microstructure and microhardness of coatings were investigated. The characterization of fully melted, un- melted and partly melte[...]
17
84%
Archives of Foundry Engineering
EN This article presents the results of investigations of the effect of heat treatment temperature on the content of the carbide phase of HS3-1-2 and HS6-5-2 low-alloy high-speed steel. Analysis of the phase composition of carbides is carried out using the diffraction method. It is determined that with[...]
18
84%
Archives of Civil and Mechanical Engineering
2012 Vol. 12, no. 2 142--147
EN Three laboratory cast and rolled high manganese steels with different Mn (in the range of 24–28 wt%), C (in the interval of 0.2–1.2 wt%) and Al (from 2.3 wt% to 12 wt%) contents has been investigated. Differences in chemical compositions, rolling conditions and followed by aging process at the tempe[...]
19
84%
Advances in Materials Science
EN This study investigates the effect of different activating flux such as V2O5, TiO2, MoO3, Cr2O3, and Al2O3 on A-TIG welding process of Incoloy 800H. The influence of the flux on the depth of penetration and on mechanical and metallurgical characteristics of the weld were studied and compared with au[...]
20
84%
Archives of Metallurgy and Materials
2010 Vol. 55, iss. 4 1053-1059
PL W pracy przedstawiono koncepcję nowych materiałów narzędziowych na osnowie niklu umacnianych związkami faz międzymetalicznych, przewidywanych do pracy w wysokich temperaturach. Skład chemiczny nowego materiału zaprojektowano tak, aby umocnienie osnowy uzyskać w wyniku wydzielania związków metaliczny[...]
EN The concept of new tool materials, based on Ni alloys strengthened by intermetallic compounds, intended for applications at high temperatures is presented in the paper. The chemical composition of this new material was designed in such a way as to obtain the matrix strengthening by means of the prec[...]
first rewind previous Strona / 2 next fast forward last