Superplasticity of Ti2448 Alloy with Nanostructured Grains

IMR OpenIR

	Superplasticity of Ti2448 Alloy with Nanostructured Grains
	M. J. Xiao; Y. X. Tian; G. W. Mao; S. J. Li; Y. L. Hao; R. Yang
	2011
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	27 期号:12 页码:1099-1104
摘要	Ti-24Nb-4Zr-8Sn, abbreviated as Ti2448 from its chemical composition in weight percent, is a multifunctional beta type titanium alloy with body centered cubic (bcc) crystal structure, and its highly localized plastic deformation behavior contributes significantly to grain refinement during conventional cold processing. In the paper, the nanostructured (NS) alloy with grain size less than 50 nm produced by cold rolling has been used to investigate its superplastic deformation behavior by uniaxial tensile tests at initial strain rates of 1.5x10(-2), 1.5x10(-3) and 1.6x10(-4) s(-1) and temperatures of 600, 650 and 700 degrees C. The results show that, in comparison with the coarse-grained alloy with size of 50 mu m, the NS alloy has better superplasticity with elongation up to,similar to 275% and ultimate strength of 50-100 MPa. Strain rate sensitivity (m) of the NS alloy is 0.21, 0.30 and 0.29 for 600, 650 and 700 degrees C, respectively. These results demonstrate that grain refinement is a valid way to enhance the superplasticity of Ti2448 alloy.
部门归属	[tian, y. x.; li, s. j.; hao, y. l.; yang, r.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [xiao, m. j.; mao, g. w.] nw polytech univ, sch astronaut, xian 710072, peoples r china.;hao, yl (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;ylliao@imr.ac.cn
关键词	Titanium Alloy Bcc Crystal Superplasticity Nanostructured Grain Severe Plastic-deformation Ti-6al-4v Alloy Titanium-alloy Enhanced Superplasticity Phase-transformation Stainless-steel Behavior Evolution Nickel Size
URL	查看原文
WOS记录号	WOS:000299352800003
引用统计	被引频次：11[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/321006/30783
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. J. Xiao,Y. X. Tian,G. W. Mao,et al. Superplasticity of Ti2448 Alloy with Nanostructured Grains[J]. Journal of Materials Science & Technology,2011,27(12):1099-1104.
APA	M. J. Xiao,Y. X. Tian,G. W. Mao,S. J. Li,Y. L. Hao,&R. Yang.(2011).Superplasticity of Ti2448 Alloy with Nanostructured Grains.Journal of Materials Science & Technology,27(12),1099-1104.
MLA	M. J. Xiao,et al."Superplasticity of Ti2448 Alloy with Nanostructured Grains".Journal of Materials Science & Technology 27.12(2011):1099-1104.