Effect of Zr and Sn on Young's modulus and superelasticity of Ti-Nb-based alloys

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	Effect of Zr and Sn on Young's modulus and superelasticity of Ti-Nb-based alloys
	Y. L. Hao; S. J. Li; S. Y. Sun; R. Yang
	2006
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	441 期号:1-2 页码:112-118
摘要	Quaternary Ti-(20-26)Nb-(2-8)Zr-(3.5-11.5)Sn (.wt%) alloys were investigated to evaluate the effects of Zr and Sri on Young's modulus and superelasticity of Ti-Nb-based alloys. X-ray diffraction analysis showed that solution-treated alloys have beta + alpha", beta + omega, alpha" + omega, alpha", or beta microstructures. Zr and Sn increase the lattice parameters of the beta phase; for orthorhombic alpha" matensite, they increase the lattice parameter a but decrease both b and c. The martensitic start temperature of the alpha" is depressed by Zr and Sri additions, whereas the formation of athermal w is dependent on Zr and Sn contents. Differential scanning calorimetry (DSC) measurements show that 1 wt% of Nb, Zr or Sn addition decreases the martensitic start temperature by 17.6, 41.2 or 40.9 K, respectively, due to their negative effect on lattice parameter ratios of the martensite (c/a and b/a). Tensile tests were used to evaluate Young's modulus and superelasticity of the solution-treated alloys. Of the studied alloys Ti-24Nb-4Zr-7.5Sn with single P microstructure has the lowest Young's modulus of 52 GPa and recoverable elastic strain of about 2% at room temperature after cyclic strain. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;hao, yl (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;ylhao@imr.ac.cn
关键词	Young's Modulus Superelasticity Biomedical Titanium Alloy Martensitic Transformation Alloying Effect Shape-memory Behavior Mechanical-properties Biomedical Applications Plastic-deformation Induced Martensite Titanium-alloy Mo Alloys Ti-29nb-13ta-4.6zr Ta Ti-10v-2fe-3al
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WOS记录号	WOS:000242612700012
引用统计	被引频次：370[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/321006/34235
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. L. Hao,S. J. Li,S. Y. Sun,et al. Effect of Zr and Sn on Young's modulus and superelasticity of Ti-Nb-based alloys[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2006,441(1-2):112-118.
APA	Y. L. Hao,S. J. Li,S. Y. Sun,&R. Yang.(2006).Effect of Zr and Sn on Young's modulus and superelasticity of Ti-Nb-based alloys.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,441(1-2),112-118.
MLA	Y. L. Hao,et al."Effect of Zr and Sn on Young's modulus and superelasticity of Ti-Nb-based alloys".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 441.1-2(2006):112-118.