Neutron Diffraction Measurements of a Thermally Fatigued Single Crystal Superalloy

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	Neutron Diffraction Measurements of a Thermally Fatigued Single Crystal Superalloy
	G. A. Sun; B. Chen; E. D. Wu; J. C. Li; T. Pirling; D. Hughes
	2009
发表期刊	Chinese Physics Letters
ISSN	0256-307X
卷号	26 期号:8
摘要	The thermally fatigued single crystal superalloy DZ125L is investigated by neutron diffraction measurements. The measurements, made using the phi angle oscillating method, provide more detailed and reliable data than those with the phi angle fixed. Diffraction studies show that the influence of thermal fatigue on the lattice parameters of the alloy is very limited. The stress analysis reveals that triaxial elastic hydrostatic stress plays a major role during thermal fatigue. The magnitude of the macrostress increases with the fatigue cycles, with the stress of the gamma phase increasing more significantly than that of the gamma' phase, and becoming fragile after many cycles. The changes in the microstrain are dependent on the reflection planes. The microstrains at the center of the sample are released by the thermal fatigue in comparison with those at the outlying locations, which has been attributed to the advance of the dislocation slips.
部门归属	[sun guang-ai; chen bo] sichuan univ, inst atom & mol phys, chengdu 610065, peoples r china. [sun guang-ai; chen bo] inst nucl phys & chem, mianyang 621900, peoples r china. [wu er-dong; li jin-chao] imr cas, natl lab mat sci, shenyang 110016, peoples r china. [pirling, t.; hughes, d.] inst max von laue paul langevin, f-38042 grenoble, france.;sun, ga (reprint author), sichuan univ, inst atom & mol phys, chengdu 610065, peoples r china;guangaisun_80@163.com
关键词	Nickel-base Superalloy X-ray-diffraction Lattice Mismatch Temperature-dependence Scattering Experiments Internal-stress Behavior Profiles Srr-99 Cmsx-4
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32301
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. A. Sun,B. Chen,E. D. Wu,et al. Neutron Diffraction Measurements of a Thermally Fatigued Single Crystal Superalloy[J]. Chinese Physics Letters,2009,26(8).
APA	G. A. Sun,B. Chen,E. D. Wu,J. C. Li,T. Pirling,&D. Hughes.(2009).Neutron Diffraction Measurements of a Thermally Fatigued Single Crystal Superalloy.Chinese Physics Letters,26(8).
MLA	G. A. Sun,et al."Neutron Diffraction Measurements of a Thermally Fatigued Single Crystal Superalloy".Chinese Physics Letters 26.8(2009).