Wear characteristics of TiNi shape memory alloys

被引：86

作者：

Lin, HC

Liao, HM

He, JL

Chen, KC

Lin, KM

机构：

[1] Department of Materials Science, Feng Chia University

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1997年 / 28卷 / 09期

关键词：

D O I：

10.1007/s11661-997-0117-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The wear characteristics of TiNi shape memory alloys against Cr-steel have been studied. Experimental results indicate that the Ti49Ni51 alloy can exhibit a better wear resistance than Ti50Ni50 alloy due to their higher hardness and pseudoelastic behaviors. Four main mechanisms, adhesion,abrasion, surface fatigue, and brinelling, are-found to have important contributions to the wear characteristics of TiNi alloys. The weight loss-increases with,increasing wear load and sliding distance but decreases with increasing sliding speed. The contact area during sliding wear will be increased due to, the variant accommodation and/or pseudoelasticity and, hence, will reduce the average compressive stress and wear damage. Variant accommodation and/or pseudoelasticity dan also stabilize the crack tips and hinder crack propagation, hence improving the wear characteristics of TiNi alloys.

引用

页码：1871 / 1877

页数：7

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