High temperature low cycle fatigue behavior of a directionally solidified Ni-base superalloy DZ951

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	High temperature low cycle fatigue behavior of a directionally solidified Ni-base superalloy DZ951
	Z. K. Chu; J. J. Yu; X. F. Sun; H. R. Guan; Z. Q. Hu
	2008
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	488 期号:1-2 页码:389-397
摘要	Total strain-controlled low cycle fatigue (LCF) tests were performed at a temperature range from 700 to 900 degrees C in ambient air condition on a directionally solidified Ni-base superalloy DZ951. The fatigue life of DZ951 alloy does not monotonously decrease with increasing temperature, but exhibits a strong dependence on the total strain range. The dislocation characteristics and failed Surface observation were evaluated through transmission electron microscopy and scanning electron microscopy. The alloy exhibits cyclic hardening, softening or cyclic stability as a whole. which is dependent on the testing temperature and total strain range. At 700 degrees C, the cyclic plastic deformation process is the main cause of fatigue failure. At 900 degrees C, the failure mostly results front combined fatigue and creep damage under total strain range from 0.6 to 1.2% and the reduction in fatigue life can be taken as the cause of oxidation, creep and cyclic plastic deformation under total strain range of 0.5%. (C) 2007 Elsevier B.V. All rights reserved.
部门归属	[chu zhaokuang; yu jinjiang; sun xiaofeng; guan hengrong; hu zhuangqi] chinese acad sci, inst met res, shenyang 110016, peoples r china. [chu zhaokuang] chinese acad sci, grad sch, beijing 100039, peoples r china.;chu, zk (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;zkchu@imr.ac.cn
关键词	Nickel-base Superalloy Low Cycle Fatigue Cyclic Deformation Cyclic Stress Response Nimonic Pe-16 Superalloy Room-temperature Crystallographic Orientation Inconel 718 Strain-rate Deformation Mechanisms Property Fracture Tensile
URL	查看原文
WOS记录号	WOS:000258860300047
引用统计	被引频次：41[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/321006/32694
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. K. Chu,J. J. Yu,X. F. Sun,et al. High temperature low cycle fatigue behavior of a directionally solidified Ni-base superalloy DZ951[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2008,488(1-2):389-397.
APA	Z. K. Chu,J. J. Yu,X. F. Sun,H. R. Guan,&Z. Q. Hu.(2008).High temperature low cycle fatigue behavior of a directionally solidified Ni-base superalloy DZ951.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,488(1-2),389-397.
MLA	Z. K. Chu,et al."High temperature low cycle fatigue behavior of a directionally solidified Ni-base superalloy DZ951".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 488.1-2(2008):389-397.