Deformation features of a nickel-base superalloy single crystal during compression creep

doi:10.1016/j.msea.2004.01.049

IMR OpenIR

	Deformation features of a nickel-base superalloy single crystal during compression creep
	Tian, SG ; Yu, XF ; Yang, JH ; Zhao, NR ; Xu, YB ; Hu, ZQ
通讯作者	Tian, SG(tiansugui2003@yahoo.com.cn)
	2004-08-15
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	379 期号:1-2 页码:141-147
摘要	The microstructure evolution of a single crystal nickel-base superalloy with [0 0 1] orientation during compressive creep at 1040 degreesC has been investigated by means of the observation of transmission electron microscopy. Results show that the cuboidal gamma' phase in the alloy is transformed into the strip-like rafted structure along the direction parallel to [0 0 1] stress axis during compressive creep. During the primary creep, the deformation feature of the alloy is the 1/2<1 1 0> dislocations activated in the gamma matrix. After crept for 50 h, the strip-like rafted gamma' (Ni3Al) phase in alloy is sheared by the <1 1 0> super-dislocations which may be dissociated into the 1/3<1 1 2> super-Shockley dislocations. The SISF formed from the dissociation of the [1 0 (1) over bar] super-dislocation is enclosed by the partials loops. One of the reason resulting in a smaller strain value of the alloy during compressive creep is the Giameis locks made from a combination of the partials loops and SISF which hinder the continuous expansion of the original [1 0 (1) over bar] super-dislocation. (C) 2004 Elsevier B.V. All rights reserved.
关键词	single crystal nickel-base superalloy compression creep dislocation
DOI	10.1016/j.msea.2004.01.049
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000223330100017
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/82068
通讯作者	Tian, SG
作者单位	1.Shenyang Univ Technol, Dept Mat Sci & Engn, Shenyang 110023, Peoples R China 2.Chinese Acad Sci, Inst Met Res, State Key Lab Fatigue & Fracture Mat, Shenyang 110015, Peoples R China
推荐引用方式 GB/T 7714	Tian, SG,Yu, XF,Yang, JH,et al. Deformation features of a nickel-base superalloy single crystal during compression creep[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2004,379(1-2):141-147.
APA	Tian, SG,Yu, XF,Yang, JH,Zhao, NR,Xu, YB,&Hu, ZQ.(2004).Deformation features of a nickel-base superalloy single crystal during compression creep.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,379(1-2),141-147.
MLA	Tian, SG,et al."Deformation features of a nickel-base superalloy single crystal during compression creep".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 379.1-2(2004):141-147.