Low cycle fatigue and creep-fatigue behavior of Ni-based alloy 230 at 850 degrees C

IMR OpenIR

	Low cycle fatigue and creep-fatigue behavior of Ni-based alloy 230 at 850 degrees C
	X. Chen; Z. Q. Yang; M. A. Sokolov; D. L. Erdman; K. Mo; J. F. Stubbins
	2013
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	563 页码:152-162
摘要	Strain-controlled low cycle fatigue (LCF) and creep-fatigue testing of Ni-based alloy 230 were carried out at 850 degrees C. The material creep-fatigue life decreased compared with its low cycle fatigue life at the same total strain range. Longer hold time at peak tensile strain further reduced the material creep-fatigue life. Based on the electron backscatter diffraction, a novel material deformation characterization method was applied, which revealed that in low cycle fatigue testing as the total strain range increased, the deformation was segregated to grain boundaries since the test temperature was higher than the material equicohesive temperature and grain boundaries became weaker regions compared with grains. Creep-fatigue tests enhanced the localized deformation, resulting in material interior intergranular cracking, and accelerated material damage. Precipitation in alloy 230 helped slip dispersion, favorable for fatigue property, but grain boundary cellular precipitates formed after material exposure to the elevated temperature had a deleterious effect on the material low cycle fatigue and creep-fatigue property. Published by Elsevier B.V.
部门归属	[chen, xiang ; mo, kun ; stubbins, james f.] univ illinois, dept nucl plasma & radiol engn, urbana, il 61801 usa. [chen, xiang ; yang, zhiqing ; sokolov, mikhail a. ; erdman, donald l., iii] oak ridge natl lab, oak ridge, tn 37831 usa. [yang, zhiqing] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; chen, x (reprint author), oak ridge natl lab, 1 bethel valley rd,pob 2008,bldg 4500s,ms 6151, oak ridge, tn 37831 usa. ; chenx@ornl.gov
关键词	Creep-fatigue Nickel Based Superalloys Ebsd High-temperature Deformation Precipitation Failure Boundary-character-distribution Crack-growth Behavior Grain-boundaries Hold-time Temperature Superalloy Dislocation Inconel-617
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/321006/71165
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Chen,Z. Q. Yang,M. A. Sokolov,et al. Low cycle fatigue and creep-fatigue behavior of Ni-based alloy 230 at 850 degrees C[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2013,563:152-162.
APA	X. Chen,Z. Q. Yang,M. A. Sokolov,D. L. Erdman,K. Mo,&J. F. Stubbins.(2013).Low cycle fatigue and creep-fatigue behavior of Ni-based alloy 230 at 850 degrees C.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,563,152-162.
MLA	X. Chen,et al."Low cycle fatigue and creep-fatigue behavior of Ni-based alloy 230 at 850 degrees C".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 563(2013):152-162.