Microstructure evolution and deformation features of single crystal nickel-based superalloy containing 4.2% Re during creep

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	Microstructure evolution and deformation features of single crystal nickel-based superalloy containing 4.2% Re during creep
其他题名	Microstructure evolution and deformation features of single crystal nickel-based superalloy containing 4.2%Re during creep
	Tian Sugui; Liang Fushun; Li Anan; Li Jingjing; Qian Benjiang
	2011
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN	1003-6326
卷号	21 期号:7 页码:1532-1537
摘要	By means of microstructure observation and measurement of creep properties, the high temperature creep behaviors of a single crystal nickel-based superalloy containing Re were investigated. Results show that the single crystal nickel-based superalloy containing 4.2% Re possesses a better creep resistance at high temperature. After being crept up to fracture, the various morphologies are displayed in the different areas of the sample, and the gamma' phase is transformed into the rafted structure along the direction vertical to the applied stress axis in the regions far from the fracture. But the coarsening and twisting extents of the rafted gamma' phase increase in the regions near the fracture, which is attributed to the occurrence of the larger plastic deformation. In the later stage of creep, the deformation mechanism of the alloy is that the dislocations with 0 (1) over bar1 and 011 trace features shear into the rafted gamma' phase. The main/secondary slipping dislocations are alternately activated to twist the rafted gamma' phase up to the occurrence of creep fracture, which is thought to be the fracture mechanism of the alloy during creep.
其他摘要	By means of microstructure observation and measurement of creep properties,the high temperature creep behaviors of a single crystal nickel-based superalloy containing Re were investigated.Results show that the single crystal nickel-based superalloy containing 4.2%Re possesses a better creep resistance at high temperature.After being crept up to fracture,the various morphologies are displayed in the different areas of the sample,and theγ′phase is transformed into the rafted structure along the direction vertical to the applied stress axis in the regions far from the fracture.But the coarsening and twisting extents of the raftedγ′phase increase in the regions near the fracture,which is attributed to the occurrence of the larger plastic deformation.In the later stage of creep,the deformation mechanism of the alloy is that the dislocations with011and011trace features shear into the raftedγ′phase.The main/secondary slipping dislocations are alternately activated to twist the raftedγ′phase up to the occurrence of creep fracture,which is thought to be the fracture mechanism of the alloy during creep.
关键词	single crystal nickel-based superalloy Re creep microstructure evolution deformation mechanism
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China]
CSCD记录号	CSCD:4256406
引用统计	被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/149081
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Tian Sugui,Liang Fushun,Li Anan,et al. Microstructure evolution and deformation features of single crystal nickel-based superalloy containing 4.2% Re during creep[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2011,21(7):1532-1537.
APA	Tian Sugui,Liang Fushun,Li Anan,Li Jingjing,&Qian Benjiang.(2011).Microstructure evolution and deformation features of single crystal nickel-based superalloy containing 4.2% Re during creep.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,21(7),1532-1537.
MLA	Tian Sugui,et al."Microstructure evolution and deformation features of single crystal nickel-based superalloy containing 4.2% Re during creep".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 21.7(2011):1532-1537.