Effects of Sc addition on the microstructure and tensile properties of Ti-6.6Al-5.5Sn-1.8Zr alloy

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	Effects of Sc addition on the microstructure and tensile properties of Ti-6.6Al-5.5Sn-1.8Zr alloy
	W. L. Xiao; S. Q. Wu; D. H. Ping; H. Murakami; Y. Yamabe-Mitarai
	2012
发表期刊	Materials Chemistry and Physics
ISSN	0254-0584
卷号	136 期号:2-3 页码:1015-1021
摘要	The effects of Sc additions on the microstructure and tensile properties of Ti-6.6Al-5.5Sn-1.8Zr-based alloys have been investigated. The results indicated that Sc acts as a-stabilizer in the studied alloy system. The grain sizes of as-cast and forged alloys were refined significantly by Sc additions. With increasing Sc addition, a large number of Sc5Sn3 and oxides are formed. The formation of brittle alpha(2)-Ti3Al precipitates during long-term aging treatment is suppressed by high content of Sc addition. The Sc addition increases the solid solution strengthening; meanwhile, the formation of Sc5Sn3 and oxides plays a role in grain refinement and dispersion strengthening. Therefore, it has been found that both room temperature and high temperature strengths are gradually improved, whereas the ductility is decreased with increasing Sc addition. (C) 2012 Elsevier B.V. All rights reserved.
部门归属	[xiao, w. l.; wu, s. q.; ping, d. h.; murakami, h.; yamabe-mitarai, y.] natl inst mat sci, tsukuba, ibaraki 3050047, japan. [wu, s. q.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [wu, s. q.] chinese acad sci, grad sch, beijing 100039, peoples r china.;xiao, wl (reprint author), natl inst mat sci, sengen 1-2-1, tsukuba, ibaraki 3050047, japan.;wenlong.xiao@hotmail.com; ping.de-hai@nims.go.jp
关键词	Alloys Heat Treatment Microstructure Mechanical Properties Strengthened Titanium-alloys 2nd-phase Particles Minor Sc Ti Behavior
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60350
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. L. Xiao,S. Q. Wu,D. H. Ping,et al. Effects of Sc addition on the microstructure and tensile properties of Ti-6.6Al-5.5Sn-1.8Zr alloy[J]. Materials Chemistry and Physics,2012,136(2-3):1015-1021.
APA	W. L. Xiao,S. Q. Wu,D. H. Ping,H. Murakami,&Y. Yamabe-Mitarai.(2012).Effects of Sc addition on the microstructure and tensile properties of Ti-6.6Al-5.5Sn-1.8Zr alloy.Materials Chemistry and Physics,136(2-3),1015-1021.
MLA	W. L. Xiao,et al."Effects of Sc addition on the microstructure and tensile properties of Ti-6.6Al-5.5Sn-1.8Zr alloy".Materials Chemistry and Physics 136.2-3(2012):1015-1021.