Wear Behavior and Mechanism of a Sliding Pair of 0. lC-3Cr-2W-V Nitrided Steel Rubbing against an Aluminum Bronze Alloy

详细信息    查看全文

• 作者：Guang-hong WANG^a ; ^{guanghwang@163.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Sheng-guan QU^a ; Zhi-hua XIONG^a ; Fu-qiang LAI^a ; Xiao-qiang LI^a ; Mao-sheng YANG^b
• 关键词：steel ; plasma nitriding ; aluminum bronze ; sliding wear ; three-body abrasion
• 刊名：Journal of Iron and Steel Research, International
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：23
• 期：3
• 页码：281-288
• 全文大小：1192 K

文摘

Wear behavior and mechanism of plasma nitrided steel oscillating against a heat-treated and an untreated aluminum bronze alloy were investigated using an Optimol SRV tribometer. The influence of heat treatment on the mechanical properties of the alloy was evaluated. Furthermore, the wear debris was also examined to understand the wear mechanisms. The results show that a 220–230 μm nitrided layer, which was harder than the substrate, was obtained on the steel surface. The tensile strength and hardness of the alloy are found to be significantly improved by the heat treatment associated with low impact toughness. The heat treatment of the alloy did not obviously decrease the friction coefficient of the nitrided steel-bronze couple. However, the wear loss of the nitrided steel increased when it mated with the treated bronze by a severe three-body abrasion. The nitrided steel was mainly damaged by fatigue spalling. Under plane contact conditions, the wear debris was mainly generated from the bronze part and can escape from the interface before being oxidized, leading to the phase structure of all the debris being copper rather than copper oxides.