Dissolution and Precipitation Behaviors of Silicides of Ti-38644 Alloy and Their Effects on Tensile Properties

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	Dissolution and Precipitation Behaviors of Silicides of Ti-38644 Alloy and Their Effects on Tensile Properties
	Ba Hongbo 1,2; Dong Liming 1; Zhang Zhiqiang 1; Wang Haizhong 1; Xu Dongsheng 1; Yang Rui 1
刊名	RARE METAL MATERIALS AND ENGINEERING
	2017-06-01
卷号	46 页码:5-10
关键词	Ti-38644 titanium alloy silicide tensile properties fracture mode
ISSN号	1002-185X
通讯作者	Ba Hongbo(bahongbo@sina.com)
英文摘要	The dissolution and precipitation behaviors of silicides of Ti-38644 titanium alloy and their influence on the microstructure and tensile properties were investigated. Microstructure characteristics and tensile fracture mode were observed by OM, SEM and TEM. The results show that trace impurity Si promotes the formation of (TiZr)(6)Si-3 silicides. Silicide gradually dissolves when the alloy is solution treated at 700 similar to 950 degrees C. No silicides are observed after the alloy is solution treated at 950 degrees C. The strength of the alloy decreases with the increasing of solution temperature in the range of 800 similar to 950 degrees C due to the dissolution of silicides and the growth of beta grains. When the alloy is solution treated at 1100 degrees C and aged at 700 similar to 900 degrees C for 1 h, silicides precipitate at grain boundaries. No grain boundary silicides are observed after the alloy is aged at 700 degrees Cand 950 degrees C. Grain boundary silicides have little influence on the strength, but the plasticity of alloys increases with the decreasing of the quantity of grain boundary silicides. The fracture mode transforms from brittle fracture to ductile fracture.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000406570100002
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/124818]
专题	金属研究所_中国科学院金属研究所
通讯作者	Ba Hongbo
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Liaoning Univ Technol, Jinzhou 121001, Peoples R China
推荐引用方式 GB/T 7714	Ba Hongbo,Dong Liming,Zhang Zhiqiang,et al. Dissolution and Precipitation Behaviors of Silicides of Ti-38644 Alloy and Their Effects on Tensile Properties[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46:5-10.
APA	Ba Hongbo,Dong Liming,Zhang Zhiqiang,Wang Haizhong,Xu Dongsheng,&Yang Rui.(2017).Dissolution and Precipitation Behaviors of Silicides of Ti-38644 Alloy and Their Effects on Tensile Properties.RARE METAL MATERIALS AND ENGINEERING,46,5-10.
MLA	Ba Hongbo,et al."Dissolution and Precipitation Behaviors of Silicides of Ti-38644 Alloy and Their Effects on Tensile Properties".RARE METAL MATERIALS AND ENGINEERING 46(2017):5-10.