ANISOTROPIC CREEP IN A Ni-BASED SINGLE CRYSTAL SUPERALLOY

IMR OpenIR

	ANISOTROPIC CREEP IN A Ni-BASED SINGLE CRYSTAL SUPERALLOY
	Jia Yuxian 1,2; Jin Tao 1; Liu Jinlai 1; Sun Xiaofeng 1; Hu Zhuangqi 1
通讯作者	Jia Yuxian(yxjia@imr.ac.cn)
	2009-11-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	45 期号:11 页码:1364-1369
摘要	Constant load creep tests were performed on the [001] and [011] oriented Ni-Co-Cr-Mo-W-Al-Ti-Ta single crystal superalloys. The [001] oriented alloy has much longer creep life than that of [011] oriented alloy, but the elongation of [011] oriented alloy is slightly higher under the condition of 750 degrees C/750 MPa. The average creep life and elongation of [001] oriented alloy are both higher than that of [011] oriented alloy at 982 degrees C/248 MPa, and the anisotropy occurs mainly during the accelerating creep stage, but anisotropic degree decreases obviously. The SEM analysis reveals gamma' phases are rafted in the two directions, which blocks the glide/climb of dislocations and causes creep hardening, the rafting of gamma' phase is the dominant reason to decrease of creep anisotropy at higher temperature. The TEM observation indicates deformation twins formed in [011] oriented alloy, which lowers the plasticity of the sample and induces the sample to fracture rapidly.
关键词	Ni-based single crystal superalloy creep anisotropy crystal orientation
资助者	National Natural Science Foundation of China
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50931004]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000272502600014
出版者	SCIENCE PRESS
引用统计	被引频次：9[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/321006/96667
专题	中国科学院金属研究所
通讯作者	Jia Yuxian
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110168, Peoples R China
推荐引用方式 GB/T 7714	Jia Yuxian,Jin Tao,Liu Jinlai,et al. ANISOTROPIC CREEP IN A Ni-BASED SINGLE CRYSTAL SUPERALLOY[J]. ACTA METALLURGICA SINICA,2009,45(11):1364-1369.
APA	Jia Yuxian,Jin Tao,Liu Jinlai,Sun Xiaofeng,&Hu Zhuangqi.(2009).ANISOTROPIC CREEP IN A Ni-BASED SINGLE CRYSTAL SUPERALLOY.ACTA METALLURGICA SINICA,45(11),1364-1369.
MLA	Jia Yuxian,et al."ANISOTROPIC CREEP IN A Ni-BASED SINGLE CRYSTAL SUPERALLOY".ACTA METALLURGICA SINICA 45.11(2009):1364-1369.