Mechanics of superelasticity in Ti-30Nb-(8-10)Ta-5Zr alloy

IMR OpenIR

	Mechanics of superelasticity in Ti-30Nb-(8-10)Ta-5Zr alloy; Mechanics of superelasticity in Ti-30Nb-(8-10)Ta-5Zr alloy
	E. G. Obbard; Y. L. Hao; T. Akahori; R. J. Talling; M. Niinomi; D. Dye; R. Yang
	2010 ; 2010
发表期刊	Acta Materialia ; Acta Materialia
ISSN	1359-6454 ; 1359-6454
卷号	58 期号:10 页码:3557-3567
摘要	The superelastic behaviour of Ti-30Nb-10Ta-5Zr and Ti-30Nb-8Ta-5Zr (wt.%) biomedical alloys was investigated by tensile testing and in situ synchrotron X-ray diffraction. The phenomenological theory of martensite crystallography and texture prediction based on the Schmid law indicate that alpha '' in Ti-30Nb-10Ta-5Zr forms in untwinned variants. Measurement of single-crystal elastic constants using an Eshelby-Kroener-Kneer self-consistent model shows that the 10-Ta alloy has a C' modulus 3 GPa higher than that of the 8-Ta alloy. That it nevertheless has a proof stress 35 MPa lower can be qualitatively explained by the differences in martensite crystallography. The results suggest that high tensile strength can be maintained for low modulus beta-Ti in spite of martensitic transformation by optimizing transformation strains. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.; The superelastic behaviour of Ti-30Nb-10Ta-5Zr and Ti-30Nb-8Ta-5Zr (wt.%) biomedical alloys was investigated by tensile testing and in situ synchrotron X-ray diffraction. The phenomenological theory of martensite crystallography and texture prediction based on the Schmid law indicate that alpha '' in Ti-30Nb-10Ta-5Zr forms in untwinned variants. Measurement of single-crystal elastic constants using an Eshelby-Kroener-Kneer self-consistent model shows that the 10-Ta alloy has a C' modulus 3 GPa higher than that of the 8-Ta alloy. That it nevertheless has a proof stress 35 MPa lower can be qualitatively explained by the differences in martensite crystallography. The results suggest that high tensile strength can be maintained for low modulus beta-Ti in spite of martensitic transformation by optimizing transformation strains. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[obbard, e. g.; hao, y. l.; yang, r.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [akahori, t.; niinomi, m.] tohoku univ, inst mat res, dept biomat sci, sendai, miyagi 9808577, japan. [talling, r. j.; dye, d.] univ london imperial coll sci technol & med, dept mat, london sw7 2az, england.;hao, yl (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;ylhao@imr.ac.cn ; [obbard, e. g.; hao, y. l.; yang, r.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [akahori, t.; niinomi, m.] tohoku univ, inst mat res, dept biomat sci, sendai, miyagi 9808577, japan. [talling, r. j.; dye, d.] univ london imperial coll sci technol & med, dept mat, london sw7 2az, england.;hao, yl (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;ylhao@imr.ac.cn
关键词	Martensitic Phase Transformation Martensitic Phase Transformation Shape Memory Alloys Shape Memory Alloys Synchrotron Synchrotron Radiation Radiation Titanium Alloys Titanium Alloys X-ray Diffraction X-ray Diffraction Shape-memory Alloys Shape-memory Alloys Tensile Deformation-behavior Tensile Deformation-behavior Crystal Crystal Elastic-constants Elastic-constants Titanium-alloy Titanium-alloy Martensitic-transformation Martensitic-transformation Biomedical Applications Biomedical Applications Single-crystals Single-crystals Gum Metal Gum Metal Ti Ti Niti Niti
URL	查看原文 ; 查看原文
WOS记录号	WOS:000278032400002 ; WOS:000278032400002
引用统计	被引频次：46[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/321006/31392
专题	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,T. Akahori,et al. Mechanics of superelasticity in Ti-30Nb-(8-10)Ta-5Zr alloy, Mechanics of superelasticity in Ti-30Nb-(8-10)Ta-5Zr alloy[J]. Acta Materialia, Acta Materialia,2010, 2010,58, 58(10):3557-3567, 3557-3567.
APA	E. G. Obbard.,Y. L. Hao.,T. Akahori.,R. J. Talling.,M. Niinomi.,...&R. Yang.(2010).Mechanics of superelasticity in Ti-30Nb-(8-10)Ta-5Zr alloy.Acta Materialia,58(10),3557-3567.
MLA	E. G. Obbard,et al."Mechanics of superelasticity in Ti-30Nb-(8-10)Ta-5Zr alloy".Acta Materialia 58.10(2010):3557-3567.