Sintered Steels: Mn Containing Alloys: Improved Mechanical Properties of Low Alloyed SinteredSteels through Fe - Mn - Si Master Alloys
In recent years cost reduction in powder metallurgy, by using alternative alloying elements, is more and more in focus of interest. Aim of this work is to present that master alloys containing Mn and Si are a practicable alternative to conventional expensive elements like Mo and Ni. Fe-Mn-Si master...
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Published in | European Congress and Exhibition on Powder Metallurgy. European PM Conference Proceedings p. 1 |
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Main Authors | , , , , |
Format | Conference Proceeding |
Language | English |
Published |
Shrewsbury
The European Powder Metallurgy Association
01.01.2011
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Subjects | |
Online Access | Get full text |
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Summary: | In recent years cost reduction in powder metallurgy, by using alternative alloying elements, is more and more in focus of interest. Aim of this work is to present that master alloys containing Mn and Si are a practicable alternative to conventional expensive elements like Mo and Ni. Fe-Mn-Si master alloys were designed with the thermodynamic Software PANDAT, to exhibit a liquid phase at sintering temperature that enables high sintering activity and homogeneous element distribution. Iron powder AHC 100.29 (Höganäs AB) was used and mixed with varying amounts of carbon and 3 m-% of different master alloys. The powders were compacted at 600 MPa and sintered under 90%N2/10%H2 at 1140 °C and 1250 °C. Specimens were tensile tested and characterised by light microscopy and SEM+EDX. The results show that, depending on the sintering temperature and powder particle size of the master alloys, improved mechanical properties are obtained by effective alloying, using a transient liquid phase. [PUBLICATION ABSTRACT] |
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