Low-cycle fatigue properties of a titanium alloy exhibiting nonlinear elastic deformation behavior
文献类型：期刊论文
| 作者 | S. Q. Zhang ; S. J. Li ; M. T. Jia ; F. Prima ; L. J. Chen ; Y. L. Hao ; R. Yang |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2011 |
| 卷号 | 59期号:11页码:4690-4699 |
| 关键词 | Elastic deformation Low-cycle fatigue Elastic asymmetry Stress-induced phase transformation ti-nb alloys biomedical applications plastic-deformation alpha'' martensite youngs modulus superelasticity zr competition mechanism omega |
| ISSN号 | 1359-6454 |
| 中文摘要 | Strain-controlled low-cycle fatigue (LCF) behavior of a metastable beta-type titanium alloy Ti-24Nb-4Zr-8Sn (wt.%, termed Ti2448) was investigated at room temperature under different cycle strains. The results showed that the alloy possesses good LCF resistance because applied total cycle strains up to 4.5% are endured mainly by the recoverable elastic strain. The study also revealed a dependence of the elastic deformation behavior on the loading condition: nonlinear elasticity with large recoverable strains in uniaxial tension but almost linear elasticity with higher elastic modulus and lower recoverable strain in uniaxial compression. The above elastic asymmetry explains the facts that both fatigue life in LCF and fatigue strength in high-cycle fatigue are worse in tension compression cycles than in tension tension cycles. Microstructure analyses of these fatigue-tested specimens showed that the beta phase is elastically stable at cycle stresses up to similar to 400 MPa whereas further increasing the applied cycle stress and strain results in small amounts of the omega phase and the alpha '' martensite. These two stress-induced phase transformations are competing and exclude each other across a wide range of cycle stress. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30913]  |
| 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 | S. Q. Zhang,S. J. Li,M. T. Jia,et al. Low-cycle fatigue properties of a titanium alloy exhibiting nonlinear elastic deformation behavior[J]. Acta Materialia,2011,59(11):4690-4699. |
| APA | S. Q. Zhang.,S. J. Li.,M. T. Jia.,F. Prima.,L. J. Chen.,...&R. Yang.(2011).Low-cycle fatigue properties of a titanium alloy exhibiting nonlinear elastic deformation behavior.Acta Materialia,59(11),4690-4699. |
| MLA | S. Q. Zhang,et al."Low-cycle fatigue properties of a titanium alloy exhibiting nonlinear elastic deformation behavior".Acta Materialia 59.11(2011):4690-4699. |
入库方式： OAI收割
来源：金属研究所
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