Evolution of deformation mechanisms of Ti-22.4Nb-0.73Ta-2Zr-1.34O alloy during straining

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	Evolution of deformation mechanisms of Ti-22.4Nb-0.73Ta-2Zr-1.34O alloy during straining
	Y. Yang; S. Q. Wu; G. P. Li; Y. L. Li; Y. F. Lu; K. Yang; P. Ge
	2010
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	58 期号:7 页码:2778-2787
摘要	The plastic deformation behavior of Ti-22.4Nb-0.73Ta-2Zr-1.34O alloy was investigated by compression testing at room temperature. The multi-peak stress oscillations of the true stress-strain curve, characterized by a stress plateau, initial strain-hardening, followed by strain-softening and a second strain-hardening stages, is observed in a titanium alloy for the first time. The experimental results show that the above four-stage plastic deformation behavior is caused by a change in the dominant deformation mechanisms. At the stress plateau stage, the alloy deforms via multiple plastic deformation mechanisms. The initial strain hardening is caused mainly by tangling of dislocations. Subsequent strain softening is due to the formation of kink bands. The second strain hardening corresponds to the formation of shear bands. The above results suggest that the dominant deformation mechanisms of Ti-Nb-Ta-Zr-O alloys are related not only to the stability of the beta phase, but also to the extent of plastic deformation. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[yang, y.; wu, s. q.; li, g. p.; li, y. l.; yang, k.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [yang, y.; lu, y. f.; ge, p.] nw inst nonferrous met res, xian 710016, peoples r china. [wu, s. q.] chinese acad sci, grad sch, beijing 100039, peoples r china.;li, gp (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;gpli@imr.ac.cn
关键词	Titanium Alloys Compression Test Plastic Deformation Multi-peak Stress Oscillations Single-crystalline Aluminum Beta-titanium Alloy Zr-o Alloys Dynamic Recrystallization Plastic-deformation Phase-stability Gum Metal Martensitic-transformation Biomedical Alloys Behavior
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WOS记录号	WOS:000276523200049
引用统计	被引频次：181[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/321006/31645
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Yang,S. Q. Wu,G. P. Li,et al. Evolution of deformation mechanisms of Ti-22.4Nb-0.73Ta-2Zr-1.34O alloy during straining[J]. Acta Materialia,2010,58(7):2778-2787.
APA	Y. Yang.,S. Q. Wu.,G. P. Li.,Y. L. Li.,Y. F. Lu.,...&P. Ge.(2010).Evolution of deformation mechanisms of Ti-22.4Nb-0.73Ta-2Zr-1.34O alloy during straining.Acta Materialia,58(7),2778-2787.
MLA	Y. Yang,et al."Evolution of deformation mechanisms of Ti-22.4Nb-0.73Ta-2Zr-1.34O alloy during straining".Acta Materialia 58.7(2010):2778-2787.