Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 17    Special 1    November 2007

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Microstructure and wear resistance of Ti-3Zr-2Sn-3Mo-15Nb (TLM) alloy
YU Zhen-tao(于振涛)1, ZHENG Yu-feng(郑玉峰)2, NIU Jin-long(牛金龙)1,
HUANGFU Qiang(皇甫强)1, ZHANG Ya-feng(张亚峰)1, YU Sen(余  森)

1. Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China;
2. State Key Laboratory for Turbulence and Complex System,
Department of Mechanics and Engineering Science, Peking University, Beijing 100871, China

Abstract:The effects of heat treatment on the microstructure and phase constitution of Ti-3Zr-2Sn-3Mo-15Nb (TLM) alloy were investigated by optical microscopy, X-ray diffractometry and transmission electron microscopy. The wear resistance of TLM alloy was tested by sliding wear in comparison with as-annealed Ti-6Al-4V and as-aged Ti-13Nb-13Zr. The results show that the specimen cooled from α+β dual phase region is mainly composed of β, α and α″ phases, while the specimen cooled from β single phase region is mainly composed of β and α phases, in which β phase is predominate. The coefficient of friction of TLM alloy treated at 680 ℃, 1 h, AC+510 ℃, 6 h, AC is smaller than that of others, thereby TLM alloy has a better wear resistance which is also proved by the surface topography after wear test.

 

Key words: Ti-3Zr-2Sn-3Mo-15Nb alloy; microstructure; wear resistance; phase constitution; β titanium alloy

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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