Dynamic globularization kinetics during hot working of a two phase titanium alloy with a colony alpha microstructure

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	Dynamic globularization kinetics during hot working of a two phase titanium alloy with a colony alpha microstructure
	H. W. Song; S. H. Zhang; M. Cheng
	2009
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	480 期号:2 页码:922-927
摘要	The dynamic globularization kinetics of Ti-6.5Al-1.5Zr-3.5Mo-0.3Si alloy with a colony alpha microstructure during deformation at temperature range of 920-980 degrees C and strain rate range of 0.01-10 s(-1) was quantitatively characterized and investigated. The results show that both the globularization fraction and globularized grain size were sensitive to deformation conditions. At temperature higher than 950 degrees C, strain rates higher than 0.1 s(-1) and true strain around 3, enhanced grain refinement was achieved through dynamic globularization. The refined structure shows improved superplasticity characteristics including near fully equaxied alpha grains around 1 mu m, discontinues beta phase and high dislocation density at the globularized grain boundaries. The dynamic globularization kinetics characteristic was associated with deformation mechanism that controls the dynamic globularization process. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[song, hong-wu; zhang, shi-hong; cheng, ming] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china.;zhang, sh (reprint author), chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china;shzhang@imr.ac.cn
关键词	High-temperature Alloys Microstructure Kinetics Strain High-temperature Deformation Static Globularization Ti-6al-4v Alloy Grade Ti-6al-4v Behavior Vt9 Transformation Mechanisms Evolution Flow
URL	查看原文
WOS记录号	WOS:000267798600158
引用统计	被引频次：126[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/321006/32286
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. W. Song,S. H. Zhang,M. Cheng. Dynamic globularization kinetics during hot working of a two phase titanium alloy with a colony alpha microstructure[J]. Journal of Alloys and Compounds,2009,480(2):922-927.
APA	H. W. Song,S. H. Zhang,&M. Cheng.(2009).Dynamic globularization kinetics during hot working of a two phase titanium alloy with a colony alpha microstructure.Journal of Alloys and Compounds,480(2),922-927.
MLA	H. W. Song,et al."Dynamic globularization kinetics during hot working of a two phase titanium alloy with a colony alpha microstructure".Journal of Alloys and Compounds 480.2(2009):922-927.