Influence of equiatomic Zr/Nb substitution on superelastic behavior of Ti-Nb-Zr alloy

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	Influence of equiatomic Zr/Nb substitution on superelastic behavior of Ti-Nb-Zr alloy
	J. Y. Zhang; F. Sun; Y. L. Hao; N. Gozdecki; E. Lebrun; P. Vermaut; R. Portier; T. Gloriant; P. Laheurte; F. Prima
	2013
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	563 页码:78-85
摘要	Based on a binary Ti-26Nb (at%) alloy, Ti-(26-z)at% Nb-(z)at% Zr (z=2, 6, 8 and 10) alloys via equiatomic substitution of Nb by Zr are formulated. Influence of equiatomic Zr/Nb substitution on microstructure evolution, mechanical properties and deformation mechanism of the superelastic Ti-Nb-Zr alloy are investigated. Experimental results show that the phase constitution is single beta phase or beta/omega(ath) phase at 0 < Zr/Nb < 0.35 since the measured Ms temperature is maintained at around 250 K. The two-phase microstructure consist of alpha '' martensite and beta phase is obtained at Zr/Nb ratio > 0.4 due to the attenuation of beta stabilizing effect of Zr, which is related closely to the Nb content in ternary Ti-Nb-Zr alloys. The mechanism of the superelastic behavior alters gradually from reversible beta/alpha '' martensitic transformation to rearrangement of pre-existing alpha '' martensites as a function of Zr/Nb ratio increase. At Zr/Nb=0.3, the alloy of corresponding composition exhibits the best superelasticity and combined mechanical performance. A coefficient of Delta T (Delta T=T-beta-Ms) is proposed to understand the experimental results by evaluating the beta instability of Ti-Nb-Zr alloys. (c) 2012 Elsevier B.V. All rights reserved.
部门归属	[zhang, jinyong ; sun, fan ; gozdecki, nicolas ; lebrun, emilie ; vermaut, philippe ; portier, richard ; prima, frederic] enscp, umr 7045, grp met struct, lab physicochim surfaces, f-75231 paris 05, france. [hao, yulin] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [gloriant, thierry] umr cnrs 6226 sci chim rennes chim met, inst sci chim rennes, f-35043 rennes, france. [laheurte, pascal] univ metz, lab umr cnrs 7239 lem3, metz, france. ; prima, f (reprint author), enscp, umr 7045, grp met struct, lab physicochim surfaces, 11 rue pierre & marie curie, f-75231 paris 05, france. ; frederic-prima@chimie-paristech.fr
关键词	Microstructure Characterization Mechanical Properties Superelasticity Metastable Beta Titanium Alloys Equiatomic Substitution Elastic-deformation-behavior Shape-memory Biomedical Applications Phase-stability Titanium-alloy Mo Alloys Martensitic-transformation Mechanical-properties Microstructure Modulus
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71685
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Y. Zhang,F. Sun,Y. L. Hao,et al. Influence of equiatomic Zr/Nb substitution on superelastic behavior of Ti-Nb-Zr alloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2013,563:78-85.
APA	J. Y. Zhang.,F. Sun.,Y. L. Hao.,N. Gozdecki.,E. Lebrun.,...&F. Prima.(2013).Influence of equiatomic Zr/Nb substitution on superelastic behavior of Ti-Nb-Zr alloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,563,78-85.
MLA	J. Y. Zhang,et al."Influence of equiatomic Zr/Nb substitution on superelastic behavior of Ti-Nb-Zr alloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 563(2013):78-85.