Cyclic deformation behaviors of Ti-46Al-2Cr-2Nb-0.15B alloy during thermo-mechanical fatigue tests

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	Cyclic deformation behaviors of Ti-46Al-2Cr-2Nb-0.15B alloy during thermo-mechanical fatigue tests
	H. F. Xiang; A. L. Dai; J. H. Wang; H. Li; R. Yang
	2010
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	20 期号:11 页码:2174-2180
摘要	Thermo-mechanical fatigue tests were carried out on the gamma-TiAl alloy in the temperature range of 500-800 degrees C under mechanical strain control in order to evaluate its cyclic deformation behaviors at elevated temperature. Cyclic deformation curves, stress-strain hysteresis loops under different temperature-strain cycles were analyzed and dislocation configurations were also observed by TEM. The mechanisms of cyclic hardening or softening during thermo-mechanical fatigue (TMF) tests were also discussed. Results showed that thermo-mechanical fatigue lives largely depended on the applied mechanical strain amplitudes, applied types of strain and temperature. On the hysteresis loops appeared two apparent asymmetries: one was zero asymmetry and the other was tensile and compressive asymmetry. Dislocations configuration and slip behaviors were contributed to cyclic hardening or cyclic softening.
部门归属	[xiang hong-fu; dai an-lun; wang ji-heng; li hui] jiangsu univ sci & technol, prov key lab adv welding technol, zhenjiang 212003, peoples r china. [yang rui] chinese acad sci, inst met res, shenyang 110016, peoples r china.;xiang, hf (reprint author), jiangsu univ sci & technol, prov key lab adv welding technol, zhenjiang 212003, peoples r china;hfxiangimr@yahoo.com.cn
关键词	Titanium-aluminium Alloy Thermo-mechanical Fatigue Cyclic Stress Response Hysteresis Loop Dislocation Gamma-tial Alloy
URL	查看原文
WOS记录号	WOS:000285188500025
引用统计	被引频次：3[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/321006/31595
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. F. Xiang,A. L. Dai,J. H. Wang,et al. Cyclic deformation behaviors of Ti-46Al-2Cr-2Nb-0.15B alloy during thermo-mechanical fatigue tests[J]. Transactions of Nonferrous Metals Society of China,2010,20(11):2174-2180.
APA	H. F. Xiang,A. L. Dai,J. H. Wang,H. Li,&R. Yang.(2010).Cyclic deformation behaviors of Ti-46Al-2Cr-2Nb-0.15B alloy during thermo-mechanical fatigue tests.Transactions of Nonferrous Metals Society of China,20(11),2174-2180.
MLA	H. F. Xiang,et al."Cyclic deformation behaviors of Ti-46Al-2Cr-2Nb-0.15B alloy during thermo-mechanical fatigue tests".Transactions of Nonferrous Metals Society of China 20.11(2010):2174-2180.