Effect of Re on low-cycle fatigue behaviors of Ni-based single-crystal superalloys at 900 degrees C

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	Effect of Re on low-cycle fatigue behaviors of Ni-based single-crystal superalloys at 900 degrees C
	P. Li; Q. Q. Li; T. Jin; Y. Z. Zhou; J. G. Li; X. F. Sun; Z. F. Zhang
	2014
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	603 页码:84-92
摘要	The effects of Re on low-cycle fatigue (LCF) behaviors of single-crystal superalloys can be summarized mainly in the following aspects. On one hand, the addition of Re strongly retards the coarsening process of gamma'-Ni3Al phase and maintains the uniformity of the phase structure. On the other hand, the Re addition can promote the segregation, which usually increases the lattice mismatch of the superalloy and further impedes any individual dislocation to move in the gamma-Ni matrix freely and induces the activation of more dislocation movement by a combined glide-climb process. All these factors have improved the LCF properties of single-crystal superalloys at 900 degrees C, for instance, the deformation becomes more homogeneous, the strengthening of gamma' phase is more effective and therefore the fatigue life becomes longer due to the addition of Re. (C) 2014 Elsevier B.V. All rights reserved.
部门归属	[li, p. ; li, q. q. ; zhang, z. f.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [li, q. q. ; jin, t. ; zhou, y. z. ; li, j. g. ; sun, x. f.] chinese acad sci, inst met res, superalloy div, shenyang 110016, peoples r china. ; li, p (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china. ; pli@imr.ac.cn ; tjin@imr.ac.cn
关键词	Low-cycle Fatigue Single-crystal Superalloy Fatigue Life Plastic Deformation Mechanisms Dislocation Temporal Evolution Rhenium Addition Al superAlloy Temperature Interface Nanostructure Deformation Chemistry
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/321006/72870
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	P. Li,Q. Q. Li,T. Jin,et al. Effect of Re on low-cycle fatigue behaviors of Ni-based single-crystal superalloys at 900 degrees C[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2014,603:84-92.
APA	P. Li.,Q. Q. Li.,T. Jin.,Y. Z. Zhou.,J. G. Li.,...&Z. F. Zhang.(2014).Effect of Re on low-cycle fatigue behaviors of Ni-based single-crystal superalloys at 900 degrees C.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,603,84-92.
MLA	P. Li,et al."Effect of Re on low-cycle fatigue behaviors of Ni-based single-crystal superalloys at 900 degrees C".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 603(2014):84-92.