Wear characteristics of TiNi shape memory alloys

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science

DOI:https://doi.org/10.1007/s11661-997-0117-3· OSTI ID:544061

Lin, H C; Liao, H M; He, J L; Chen, K C; Lin, K M ^[1]

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1. Feng Chia Univ., Taichung (Taiwan, Province of China). Dept. of Materials Science

The wear characteristics of TiNi shape memory alloys against Cr-steel have been studied. Experimental results indicate that the Ti{sub 49}Ni{sub 51} alloy can exhibit a better wear resistance than Ti{sub 50}Ni{sub 50} 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 w3ear 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 can also stabilize the crack tips and hinder crack propagation, hence improving the wear characteristics of TiNi alloys.

• Sponsoring Organization: National Science Council, Taipei (Taiwan, Province of China)
• OSTI ID: 544061
• Journal Information: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Journal Name: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Journal Issue: 9 Vol. 28; ISSN 1073-5623; ISSN MMTAEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABRASION
ADHESION
CHROMIUM STEELS
EXPERIMENTAL DATA
FATIGUE
HARDNESS
INTERMETALLIC COMPOUNDS
MORPHOLOGY
NICKEL ALLOYS
SLIDING FRICTION
STOICHIOMETRY
TITANIUM ALLOYS
WEAR RESISTANCE