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Microstructure evolution and deformation features of single crystal nickel-based superalloy containing 4.2% Re during creep
Alternative TitleMicrostructure 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
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume21Issue:7Pages:1532-1537
AbstractBy 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.
Other AbstractBy 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.
Keywordsingle crystal nickel-based superalloy Re creep microstructure evolution deformation mechanism
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China]
CSCD IDCSCD:4256406
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/149081
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
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.
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