Oxygen permeation behaviors and hardening effect of titanium alloys at high temperature

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	Oxygen permeation behaviors and hardening effect of titanium alloys at high temperature
	H. Y. Ma; M. C. Wang; W. T. Wu
	2004
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	20 期号:6 页码:719-723
摘要	In order to improve the surface hardness and wear resistance of Ti and Ti alloy components, an oxygen permeation treatment (OPT) was developed. The oxygen permeation behaviors of three Ti alloys, TA2, TB5 and TC11, treated in air with O-P medium at high temperature have been studied. The results show that the O-P treatment can significantly improve the surface hardness of Ti alloys. The oxidation mass-gain of beta-Ti alloy (TB5) is much higher than alpha-Ti alloy (TA2) under the same condition, while alpha+beta Ti alloy (TC11) is the lowest. All the Ti alloys treated at this condition produce two surface layers: the outer layer consists mainly of TiO2, as well as trace of other oxides, and the inner layer consists of a Ti-O interstitial solid solution formed by the diffusion of oxygen in a crystal lattice. Thick scales of beta Ti alloy (TB5) are easily formed depending mainly on the poor solid solution content of oxygen, while deep solution layer can be formed since partial beta phase has been transformed into a phase. The scales of alpha-beta Ti alloy (TC11) are very thin and compact. Aluminum-rich zone, as well as deficient zone, is found in oxide layers. A crystallographic characterization of oxygen solution layer has been performed. and evaluated by crystallographic lattice constant.
部门归属	chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, peoples r china. chinese acad sci, grad sch, beijing 100039, peoples r china.;wang, mc (reprint author), chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, peoples r china;wmc@imr.ac.cn
关键词	Microstructure Oxygen Permeation Titanium Solid Solution
URL	查看原文
WOS记录号	WOS:000225623300023
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35497
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Y. Ma,M. C. Wang,W. T. Wu. Oxygen permeation behaviors and hardening effect of titanium alloys at high temperature[J]. Journal of Materials Science & Technology,2004,20(6):719-723.
APA	H. Y. Ma,M. C. Wang,&W. T. Wu.(2004).Oxygen permeation behaviors and hardening effect of titanium alloys at high temperature.Journal of Materials Science & Technology,20(6),719-723.
MLA	H. Y. Ma,et al."Oxygen permeation behaviors and hardening effect of titanium alloys at high temperature".Journal of Materials Science & Technology 20.6(2004):719-723.