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Researches Regarding the Influence of Cu Content on Static and Dynamic Properties of Sintered Steels

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Author(s): Liviu BRÂNDUŞAN

Journal: Leonardo Electronic Journal of Practices and Technologies
ISSN 1583-1078

Volume: 3;
Issue: 4;
Start page: 30;
Date: 2004;
Original page

Keywords: Materials fatigue | Materials properties | Powder metallurgy

ABSTRACT
The utilisation of iron powder in sintered steels subjected to variable loadings was confined because of their low fatigue resistance and the fact that this kind of loading is unknown for the users. Lately, a lot of effort was made to determine the fatigue behaviour and to identify new methods for improving these properties.In this paper are analyse the behaviour of elaborate materials from iron powder, DWP 200.28 with cooper addition, pressed at 600 MPa and sintered at 1120°C for 30 minutes in endogas. The cooper is add to improve the mechanical characteristics, by forming some favourable microstructures and more round pores from the material macrostructure. For this materials tensile resistance, elongation, Young modulus and the number of cycles until failure are analysed. We find that the cooper add say in a different way these properties.
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