A New Approach to Heat Treatment of High-Strength Powder Steels

被引：0
|
作者：
R. Bidulský
J. Bidulská
M. Actis Grande
机构：
[1] Technical University of Košice,
[2] Faculty of Metallurgy,undefined
[3] Department of Metals Forming,undefined
[4] Politecnico di Torino,undefined
[5] Department of Applied Science and Technology,undefined
来源：
Metal Science and Heat Treatment | 2017年 / 58卷
关键词：
powder metallurgy; sintered steels; hardening sintering; wear; microstructure; hardness;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Wear (pin-on-disk) tests of low-alloy powder steels (with 0.5 and 0.65% C) are performed after vacuum sintering combined with hardening. The studied alloying systems are 0.65% C + 1.5% Cr + 0.2% Mo, 0.65% C + 0.9% Ni + 0.9% Mo + 0.2% Mn and 0.5% C + 4% Ni + 1.5% Cu + 0.5% Mo. The wear resistance of the steels after the hardening sintering is an order of magnitude higher than after the conventional sintering. The wear resistance of the steels increases in the following order: pearlitic, pearlitic-bainitic, and martensitic structures. Accordingly, the hardness grows from 98 to 105 HRB.
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页码：734 / 737
页数：3
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