Improvements in nonlinear elasticity and strength by grain refinement in a titanium alloy with high oxygen content
Improvements in nonlinear elasticity and strength by grain refinement in a titanium alloy with high oxygen content
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高氧钛合金晶粒细化改善非线性弹性和强度
DOI：
10.1016/j.scriptamat.2011.02.006
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发表时间：
2011-06-01
影响因子：
6
通讯作者：
Yang, R.
中科院分区：
文献类型：
--
作者：
Li, S. J.;Jia, M. T.;Yang, R.
本文报道了一种在673K温轧制备的超细晶Ti-24Nb-4Zr-8Sn0.4O(wt.%)合金，该合金具有显著的非线性弹性变形，其可回复应变接近3A，抗拉强度为1200 MPa，杨氏模数为56 Gpa，伸长率为8%。经三步热处理后，获得了抗拉强度为1700 Mpa，疲劳强度为1050 Mpa，延伸率为5%的超细晶β相中含有纳米α相的复相组织。(C)2011 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
This paper reports an ultrafine-grained Ti-24Nb-4Zr-8Sn-0.4O (wt.%) alloy produced by warm rolling at 673 K, showing notable nonlinear elastic deformation with a recoverable strain of similar to 3 A as well as a tensile strength of 1200 MPa, Young's modulus of 56 GPa and elongation of 8%. A duplex microstructure with nanosized alpha precipitates in ultrafine-grained beta matrix was obtained by a subsequent three-step heat treatment to achieve a tensile strength of 1700 M Pa, a fatigue strength of 1050 M Pa and an elongation of 5%. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.