Effects of primary and secondary alpha phase on tensile property and fracture toughness of Ti-1023 alloy

IMR OpenIR

	Effects of primary and secondary alpha phase on tensile property and fracture toughness of Ti-1023 alloy
	Wang Xiaoyan; Liu Jianrong; Lei Jiafeng; Cao Mingzhou; Liu Yuyin
通讯作者	Lei Jiafeng(jflei@imr.ac.cn)
	2007-11-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	43 期号:11 页码:1129-1137
摘要	The volume fraction of primary alpha phase (alpha(p)) in Ti-1023 alloy plays the main role in influencing the mechanical properties. Under solution heat treatment (ST) condition, tensile strength decreases with the decrease of the volume fraction of alpha(p); Under solution and aging heat treatment (STA) condition, both the strength and fracture toughness (K-IC) exhibit the increase tendency with the decrease of the alpha(p) volume fraction, but the increase amplitude for K-IC was far less than that for strength. The above results can be explained by the decrease of the alpha(p) volume fraction caused the increases of the solute concentration in metastable beta phase and the growth of beta grain size. The secondary alpha phase (alpha(s)) has obvious effect on improving mechanical strength. With the growth of alpha(s) size and the decrease of its amount, the strengthening effect of as was decreased, but fracture toughness and tensile ductility were obviously improved. The better combination of fracture toughness and tensile strength can be achieved by lowering alpha(p) volume fraction, controlling appropriate alpha(s) amount and its size and reducing the amount and size of continuous grain boundary alpha phase.
关键词	Ti-1023 alloy primary alpha phase secondary alpha phase tensile property fracture toughness
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000251576700002
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：19[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/321006/90917
专题	中国科学院金属研究所
通讯作者	Lei Jiafeng
作者单位	Chinese Acad Sci, Inst Met Res, Titanium Alloy Lab, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang Xiaoyan,Liu Jianrong,Lei Jiafeng,et al. Effects of primary and secondary alpha phase on tensile property and fracture toughness of Ti-1023 alloy[J]. ACTA METALLURGICA SINICA,2007,43(11):1129-1137.
APA	Wang Xiaoyan,Liu Jianrong,Lei Jiafeng,Cao Mingzhou,&Liu Yuyin.(2007).Effects of primary and secondary alpha phase on tensile property and fracture toughness of Ti-1023 alloy.ACTA METALLURGICA SINICA,43(11),1129-1137.
MLA	Wang Xiaoyan,et al."Effects of primary and secondary alpha phase on tensile property and fracture toughness of Ti-1023 alloy".ACTA METALLURGICA SINICA 43.11(2007):1129-1137.