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Journal of Achievements in Materials and Manufacturing Engineering
PL .
EN Purpose: Silver alloys intended for industrial application should characterise by high electrical conductivity (as pure silver) as well as high mechanical and functional properties, stable also at elevated temperature. The objective of this work was to investigate the mechanical properties stability[...]
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Archives of Metallurgy and Materials
2016 Vol. 61, iss. 2B 1009--1019
EN The article presents the possibilities of using acoustic microscopy to evaluate defects in resistance spot welding joints. For this purpose, the welded joints were made from two grades of aluminium plates EN AW5754 H24 and EN AW6005 T606, which were then subjected to non-destructive testing using ac[...]
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: In this paper there is presented the corrosion behavior of cast magnesium alloys in as cast state and after heat treatment. Design/methodology/approach: The following results concern scanning electron microscopy investigations in the SE as well BSE observation mode, for better phase contras[...]
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Archives of Foundry Engineering
EN Nowadays, there are growing demands on the accuracy of production. Most of this is reflected in precise manufacturing, such as the investment casting process. Foundries are looking for causes of defects in some cases for a very long time, and it may happen that the source of defects is completely di[...]
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Czasopismo Techniczne. Mechanika
PL W artykule przedstawiono wyniki obserwacji i badań ilościowych porowatości występującej w nadstopie IN713C w stanie lanym i po próbie pełzania. Scharakteryzowano pokrótce źródła powstawania porowatości w odlewach. Metodyka pomiaru porów opisano i przedstawiono uzyskane wyniki pomiarów wraz z ich int[...]
EN The paper summarizes the results of observation and quantitative analysis of porosity in IN713C superalloy in as-cast and after the creep test. The sources of porosity in castings are shortly described and the methodology of pores measurement is circumscribed. The results of pores in as-cast and aft[...]
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Archives of Metallurgy and Materials
EN In this work the effect of Mg addition on structure as well as kinetics of crystallisation of Zn-Al-Cu cast alloy was presented. To the zinc alloy was added 0.1% mass of Mg. The alloy was cast into a metal mould. Thermo-derivative analysis was performed using the UMSA platform (Universal Metallurgic[...]
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Archives of Metallurgy and Materials
EN The study describes the influence of a surface modification in cored, thin-walled castings of blades from IN-713C nickel superalloy on γ' phase precipitates. The blades were produced by using the investment casting process in the laboratory conditions as parts for a low-pressure turbine rotor. The m[...]
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Archives of Foundry Engineering
EN Contemporary materials should possess high mechanical properties, physical and chemical, as well as technological ones, to ensure long and reliable use. The non-ferrous metals alloys used nowadays, including the magnesium alloys, meet the above-mentioned requirements and expectations regarding the c[...]
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Archives of Foundry Engineering
EN The paper presents results of research on a cross element damaged during the service, made of the casting alloy of aluminum - AlSi11Cu2(Fe) (AK132). Performed research was to explain the reasons for this damage and included microstructural observation as well as the investigation on mechanical prope[...]
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Archives of Foundry Engineering
EN The paper presents a characteristic of solidification process and changes occurring in the solid state in a duplex cast steel. Theoretical chemical composition of individual phases, its changes during solidification and cooling after solidification and also changes in volume fractions of phases vers[...]
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Archives of Foundry Engineering
EN A number of commercial magnesium casting alloys based on Mg-Zn binary alloy system contains some additions of rare earths metals and zirconium. The rare earth elements are added to improvement creep resistance, zirconium to improvement mechanical properties at room temperature due to strongly effect[...]
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Archives of Foundry Engineering
EN In this study, taking as an example the creep-resistant austenitic cast steel, the results of the investigations were presented whose aim was to show what effect the specimen surface condition, discussed in terms of its roughness obtained by grinding, polishing with diamond paste, electrolytic polis[...]
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The objective of the work was to investigate changes in structure and properties of Cu-yttria microcomposites which take place in the process of controlled sintering and deformation of materials of nanometric initial structure. Design/methodology/approach: Tests were made with the Cu-yttri[...]
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The objective of the work was to investigate changes in structure and properties of Cu-WC microcomposites which take place in the process of controlled hot deformation of materials of nanometric initial structure. Design/methodology/approach: Tests were made with the Cu-WC micro-composites[...]
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Archives of Materials Science and Engineering
EN Purpose: The objective of the study was to produce copper-based dispersion hardened materials of submicron grain size, determination of their basic functional properties and stability in high temperature, as well as comparison of those properties with properties of selected precipitation hardened co[...]
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Archives of Foundry Engineering
EN Trial series of cast alloy MO59 obtained from qualified scrap was investigated. SEM and TEM of resulting precipitates were conducted. The SEM analysis demonstrated the dependence of silicon, phosphorus, iron, chromium and nickel in the composition of the so-called hard precipitates. TEM analysis sho[...]
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Archives of Metallurgy and Materials
2010 Vol. 55, iss. 4 1029-1033
PL Zbadane zostały fazy brązu aluminiowego (Cu-Al10-Fe2) odlewanego ciśnieniowo w sposób ciągły. Kontrolowanymi parametrami była temperatura wstępnego ogrzewania kokili oraz grubość powłoki grafitowej. Stwierdzono występowanie faz α i γ2, metastabilnych faz β' oraz γ', podobnie j[...]
EN The phases obtained in copper aluminium bronze alloy (Cu-Al10-Fe2) cast into a permanent die were investigated. The parameters examined were the pre-heating temperatures of the die and the graphite coating thickness. The phases α and γ2 were detected as well as the metastable phases &bet[...]
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Hutnik, Wiadomości Hutnicze
PL W pracy przedstawiono kształtowanie się wiedzy metaloznawczej do metalografii do metaloznawstwa oraz nauki o materiałach i inżynierii materiałowej. Omówiono znaczenie dla tego procesu kolejnych odkryć naukowych, rozwoju metod badawczych oraz postępu technicznego i cywilizacyjnego. Podkreślono rolę b[...]
EN The work presents formation of physical metallurgy knowledge commencing from the metallography to metal and materials science and engineering. Importance of the successive science discoveries, development of the research methods as well as technological and civilization progress to this process has [...]
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Archives of Foundry Engineering
EN The paper presents the results of microstructural examinations of the industrial heat-resistant centrifugally cast GX25CrNiSi18-9 steel characterised by increased content of Cu. The study included changes in the microstructure of base cast steel respective of the steel held at a temperature of 900 a[...]
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Archives of Foundry Engineering
EN Low melting alloys were long known in ancient times. Renaissance and medieval founders, tin founders and craftsmen have used them since 16th century. Low melting alloys means alloys whose melting point is within the rangę of 60-305°C. Main components of these alloys include: lead, antimony, bismuth,[...]
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