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ASM Handbook

Heat Treating of Irons and Steels

Edited by
Jon L. Dossett
Jon L. Dossett
Consultant
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George E. Totten
George E. Totten
Portland State University
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ASM International
Volume
4D
ISBN electronic:
978-1-62708-168-9
Publication date:
2014
Book Chapter

Heat Treatment of Powder Metallurgy Steels

By
Joseph W. Newkirk
Joseph W. Newkirk
Missouri University of Science and Technology
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Published:
2014
Page range:
253 - 273
Publication history
October 30, 2014

Abstract

Powder metallurgy (PM) processes include press and sinter hardening, metal injection molding, powder forging, hot isostatic pressing, powder rolling, and spray forming. This article provides an overview of PM processing methods and general considerations of heat treatment of PM parts that are case-hardened to obtain higher hardness, wear, fatigue, and impact properties. It describes the effects of porosity on heat treatment, alloy content on PM hardenability, and starting material on homogenization of PM steels. The article describes the properties, following heat treatment, of low-alloy steels tempered at 175 °C for one hour, and lists recommended quench and temper parameters to achieve good wear resistance and core strength based on different ranges of porosity.

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Joseph W. Newkirk, 2014. "Heat Treatment of Powder Metallurgy Steels", Heat Treating of Irons and Steels, Jon L. Dossett, George E. Totten

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