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Metallurgical and Materials Transactions A
Published in: Metallurgical and Materials Transactions A 5/2009

01-05-2009

Correlation of Microstructure with Hardness, Wear Resistance, and Corrosion Resistance of Powder-Injection-Molded Specimens of Fe-Alloy Powders

Authors: Chang-Young Son, Tae Shik Yoon, Sunghak Lee

Published in: Metallurgical and Materials Transactions A | Issue 5/2009

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Abstract

In this study, the powder injection molding (PIM) process was applied to Fe-alloy powders. Microstructure, hardness, wear resistance, and corrosion resistance of the PIM specimens were analyzed and compared with those of a conventional stainless steel, SS316L. When Fe-alloy powders were injection molded and then sintered at 1200 °C or 1250 °C, completely densified specimens with almost no pores were obtained. They contained 63 to 80 vol pct of hard (Cr,Fe)2B dispersed in the austenite or martensite matrix. Since these (Cr,Fe)2B borides were very hard, thermally stable, and corrosion resistant, hardness, high-temperature hardness, wear resistance, and corrosion resistance of the PIM specimens of Fe-alloy powders were 2 to 5 times as high as those of the stainless steel. Such property improvement suggested new applicability of the PIM products of Fe-alloy powders to structures and parts requiring excellent mechanical properties.
previous article Analysis of the Parameters Influencing the Quench-Aging Behavior of Ultra-Low-Carbon Steels
next article Using Thermomechanical Conditioning Cycles to Improve Fracture Toughness of Low Carbon Steel

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Footnotes
1
ARMACOR is a trademark of Liquidmetal Technologies, Lake Forest, CA.
 
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Metadata
Title
Correlation of Microstructure with Hardness, Wear Resistance, and Corrosion Resistance of Powder-Injection-Molded Specimens of Fe-Alloy Powders
Authors
Chang-Young Son
Tae Shik Yoon
Sunghak Lee
Publication date
01-05-2009
Publisher
Springer US
Published in
Metallurgical and Materials Transactions A / Issue 5/2009
Print ISSN: 1073-5623
Electronic ISSN: 1543-1940
DOI
https://doi.org/10.1007/s11661-009-9809-1

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