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
刊名	Materials Chemistry and Physics
	2012
卷号	136 期号:2-3 页码:1015-1021
关键词	Alloys Heat treatment Microstructure Mechanical properties strengthened titanium-alloys 2nd-phase particles minor sc ti behavior
ISSN号	0254-0584
中文摘要	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.
原文出处	://WOS:000311865400105
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/60350]
专题	金属研究所_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.