Orientation and temperature dependence of yielding and deformation behavior of a nickel-base single crystal superalloy

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	Orientation and temperature dependence of yielding and deformation behavior of a nickel-base single crystal superalloy; Orientation and temperature dependence of yielding and deformation behavior of a nickel-base single crystal superalloy
	L. N. Wang; Y. Liu; J. J. Yu; Y. Xu; X. F. Sun; H. R. Guan; Z. Q. Hu
	2009 ; 2009
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing ; Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093 ; 0921-5093
卷号	505 期号:1-2 页码:144-150
摘要	Single crystal nickel-base superalloy SRR99 with orientation near < 001 >, < 011 > and < 111 > were tension tested at the temperature range from 20 to 900 degrees C. The experimental results showed that yielding strength of SRR99 alloy was anisotropic at all tested temperatures. The deformation mechanism was characterized by the matrix dislocation propagating on octahedral slip systems and shearing of gamma' particles by dislocation pairs, loops and superlattice stacking faults. Meanwhile, the cross-slip of screw dislocations within gamma' was thought to account for the tensile anisotropy. Fracture behavior was investigated by optical microscopy (CM) and scanning electron microscopy (SEM). It is of interest to note that the fracture surfaces of the three orientated samples tested at intermediate temperature indicate shearing rupture characteristic along {111} crystal plane. (C) 2009 Elsevier B.V. All rights reserved.; Single crystal nickel-base superalloy SRR99 with orientation near < 001 >, < 011 > and < 111 > were tension tested at the temperature range from 20 to 900 degrees C. The experimental results showed that yielding strength of SRR99 alloy was anisotropic at all tested temperatures. The deformation mechanism was characterized by the matrix dislocation propagating on octahedral slip systems and shearing of gamma' particles by dislocation pairs, loops and superlattice stacking faults. Meanwhile, the cross-slip of screw dislocations within gamma' was thought to account for the tensile anisotropy. Fracture behavior was investigated by optical microscopy (CM) and scanning electron microscopy (SEM). It is of interest to note that the fracture surfaces of the three orientated samples tested at intermediate temperature indicate shearing rupture characteristic along {111} crystal plane. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[wang, l. n.; liu, y.; yu, j. j.; xu, y.; sun, x. f.; guan, h. r.; hu, z. q.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [wang, l. n.; liu, y.] chinese acad sci, grad sch, beijing 100039, peoples r china.;liu, y (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;ivan_liu1026@yahoo.com ; [wang, l. n.; liu, y.; yu, j. j.; xu, y.; sun, x. f.; guan, h. r.; hu, z. q.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [wang, l. n.; liu, y.] chinese acad sci, grad sch, beijing 100039, peoples r china.;liu, y (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;ivan_liu1026@yahoo.com
关键词	Single Crystal Superalloy Single Crystal Superalloy Yield Strength Yield Strength Dislocations Dislocations Gamma ' Gamma ' Precipitate Precipitate Resolved Shear-stress Resolved Shear-stress Mechanical-properties Mechanical-properties Volume Fraction Volume Fraction Anisotropy Anisotropy Direction Direction Rene-n4 Rene-n4 Alloy Alloy Ni3al Ni3al Slip Slip
URL	查看原文 ; 查看原文
WOS记录号	WOS:000264364100022 ; WOS:000264364100022
引用统计	被引频次：65[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/321006/32363
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. N. Wang,Y. Liu,J. J. Yu,et al. Orientation and temperature dependence of yielding and deformation behavior of a nickel-base single crystal superalloy, Orientation and temperature dependence of yielding and deformation behavior of a nickel-base single crystal superalloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2009, 2009,505, 505(1-2):144-150, 144-150.
APA	L. N. Wang.,Y. Liu.,J. J. Yu.,Y. Xu.,X. F. Sun.,...&Z. Q. Hu.(2009).Orientation and temperature dependence of yielding and deformation behavior of a nickel-base single crystal superalloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,505(1-2),144-150.
MLA	L. N. Wang,et al."Orientation and temperature dependence of yielding and deformation behavior of a nickel-base single crystal superalloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 505.1-2(2009):144-150.