Creep fracture mechanism of TLP joint of a Ni-base single crystal superalloy

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	Creep fracture mechanism of TLP joint of a Ni-base single crystal superalloy
	J. D. Liu; T. Jin; W. Li; X. F. Sun; H. R. Guan; Z. Q. Hu
	2008
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	457 期号:1-2 页码:185-190
摘要	A kind of Ni-base single crystal superalloy was bonded by transient liquid-phase (TLP) process with Ni-Cr-B interlayer. The fracture process of TLP joint during creep test at 982 degrees C/248 MPa was investigated. Results show that due to assemble mismatch or original orientation discrepancy many subgrain boundaries can form in the bonding zone after bonding, and an amount of microporosities nucleate near those subgrain boundaries during creep deformation. With more creep deformation microcracks can initiate at those micropores. Propagation and interconnection of these microcracks result in the failure of TLP joint just at the bonding zone. The reasons for formation of those subgrain boundaries at bonding zone during isothermal solidification are also discussed. (C) 2007 Elsevier B.V. All rights reserved.
部门归属	[liu, ji-de; jin, tao; sun, xiao-feng; guan, heng-rong; hu, zhang-qi] chinese acad sci, inst met res, dept superalloy, shenyang 110016, peoples r china. [liu, ji-de] chinese acad sci, grad sch, beijing 100039, peoples r china. [li, wen] shenyang ligong univ, mat sci & engn coll, shenyang 110168, peoples r china.;liu, jd (reprint author), chinese acad sci, inst met res, dept superalloy, 72 wenhua rd, shenyang 110016, peoples r china;jdliu@imr.ac.cn
关键词	High Temperature Alloys Creep Property Microstructures Fracture Bonding Behavior Growth Alloy
URL	查看原文
WOS记录号	WOS:000256124900036
引用统计	被引频次：29[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/321006/32948
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. D. Liu,T. Jin,W. Li,et al. Creep fracture mechanism of TLP joint of a Ni-base single crystal superalloy[J]. Journal of Alloys and Compounds,2008,457(1-2):185-190.
APA	J. D. Liu,T. Jin,W. Li,X. F. Sun,H. R. Guan,&Z. Q. Hu.(2008).Creep fracture mechanism of TLP joint of a Ni-base single crystal superalloy.Journal of Alloys and Compounds,457(1-2),185-190.
MLA	J. D. Liu,et al."Creep fracture mechanism of TLP joint of a Ni-base single crystal superalloy".Journal of Alloys and Compounds 457.1-2(2008):185-190.