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Anisotropy of high cycle fatigue behavior of a Ni-base single crystal superalloy
J. J. Yu; Y. L. Sun; X. F. Sun; T. Jin; Z. Q. Hu
2013
Source PublicationMaterials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN0921-5093
Volume566Pages:90-95
AbstractThe rotary bending high cycle fatigue properties of a single crystal superalloy in three orientations were tested at 700 degrees C in ambient atmosphere. The [011] orientation shows the highest fatigue strength. Moreover, the fatigue strength with < 111 > orientation is obviously higher than that with < 001 > orientation. There are two types of fracture modes, one is cleavage fracture for the [001] orientation, the other is the mixed fracture of cleavage and tearing for the [011] orientation. The < 011 > orientation shows more pronounced crystal lattice rotation than the < 111 > orientation. Nevertheless, lattice rotation does not occur in the crystals with [001] orientation. Fatigue steps of the [001] and [111] orientated crystals propagate along different {111} glide planes, which means that the slip in < 111 > orientation moves more easily than in < 011 > orientation. The typical deformation mode of [001], [011] or [111] orientation is respectively slip bands running through gamma and gamma' phases, dislocation pairs shearing gamma' particles, or superlattice stacking faults besides high-density dislocation shearing gamma' particles. (C) 2013 Elsevier B.V. All rights reserved.
description.department[yu, jinjiang ; sun, yuelai ; sun, xiaofeng ; jin, tao ; hu, zhuangqi] chinese acad sci, inst met res, shenyang 110016, peoples r china. [sun, yuelai] chinese acad sci, grad sch, beijing 100039, peoples r china. ; yu, jj (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china. ; jjyu@imr.ac.cn
KeywordHigh Cycle Fatigue Anisotropy Fatigue Strength Cleavage Fracture Stress Rupture Properties Deformation-behavior Creep Temperature Orientation 650-degrees-c Cmsx-4 Damage
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71652
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
J. J. Yu,Y. L. Sun,X. F. Sun,et al. Anisotropy of high cycle fatigue behavior of a Ni-base single crystal superalloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2013,566:90-95.
APA J. J. Yu,Y. L. Sun,X. F. Sun,T. Jin,&Z. Q. Hu.(2013).Anisotropy of high cycle fatigue behavior of a Ni-base single crystal superalloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,566,90-95.
MLA J. J. Yu,et al."Anisotropy of high cycle fatigue behavior of a Ni-base single crystal superalloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 566(2013):90-95.
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