The effect of oxygen on alpha '' martensite and superelasticity in Ti-24Nb-4Zr-8Sn

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	The effect of oxygen on alpha '' martensite and superelasticity in Ti-24Nb-4Zr-8Sn
	E. G. Obbard ; Y. L. Hao ; R. J. Talling ; S. J. Li ; Y. W. Zhang ; D. Dye ; R. Yang
刊名	Acta Materialia
	2011
卷号	59 期号:1 页码:112-125
关键词	Martensitic phase transformation Shape memory alloys Synchrotron radiation Titanium alloys X ray diffraction ti-nb-ta transmission electron-microscopy shape-memory behavior titanium-alloy gum metal elastic-constants single-crystal biomedical applications phase-transformations texture analysis
ISSN号	1359-6454
中文摘要	beta Phase elasticity stress-induced alpha '' transformation and superelasticity in hot-forged Ti-24Nb-4Zr-8Sn (0 08-0 40)O (wt %) has been investigated by in situ synchrotron X-ray diffraction Rietveld refinement and texture analysis The beta elastic constants were determined by Eshelby-Krone-Kneer self-consistent modelling A micromechanical model based on texture, martensite crystallography and Schmid law nucleation criteria was used to analyse the generation of non linear strain Oxygen increased the e cubic shear constant The beta phase showed Increased compliance along < 1 1 0 >(beta) as precursor to transformation, which occurs above 0 15 wt % O by growth of nanosized nuclei, and is nearly suppressed at 0 40 wt % O by structural convergence of parent/martensite phases The shape of the stress strain curve is due principally to stress induced martensitic transformation with high-symmetry {7 5 5}(beta) habit planes, and is controlled by oxygen through Its effect on the transformation strains and critical shear stress (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved
原文出处	://WOS:000284789200013
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/30604]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	E. G. Obbard,Y. L. Hao,R. J. Talling,et al. The effect of oxygen on alpha '' martensite and superelasticity in Ti-24Nb-4Zr-8Sn[J]. Acta Materialia,2011,59(1):112-125.
APA	E. G. Obbard.,Y. L. Hao.,R. J. Talling.,S. J. Li.,Y. W. Zhang.,...&R. Yang.(2011).The effect of oxygen on alpha '' martensite and superelasticity in Ti-24Nb-4Zr-8Sn.Acta Materialia,59(1),112-125.
MLA	E. G. Obbard,et al."The effect of oxygen on alpha '' martensite and superelasticity in Ti-24Nb-4Zr-8Sn".Acta Materialia 59.1(2011):112-125.