Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy

doi:10.1007/s40195-020-01075-3

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	Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy
	Chen, Mao-Kai 1,2; Xie, Jun 2; Shu, De-Long 2; Hou, Gui-Chen 2; Xun, Shu-Ling 2; Yu, Jin-Jiang 2; Liu, Li-Rong 1; Sun, Xiao-Feng 2; Zhou, Yi-Zhou 2
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2020-06-09
页码	10
关键词	K416B superalloy Thermal exposure Deformation mechanism Fracture characteristics
ISSN号	1006-7191
DOI	10.1007/s40195-020-01075-3
通讯作者	Xie, Jun(junxie@imr.ac.cn)
英文摘要	The effect of long-term thermal exposure on the tensile behavior of a high W content nickel-based superalloy K416B was investigated. The microstructure and the deformation characteristics were observed by scanning electron microscopy and transmission electron microscopy, and the phase transformation of the alloy during long-term thermal exposure was analyzed by X-ray diffraction patterns and differential thermal analysis. Results showed that after thermal exposure at 1000 degrees C, theMC carbides in the K416B alloy decomposed intoM(6)C. During tensile deformation, dislocations slipping in gamma matrix crossed over theM(6)C by Orowan bowing mechanism. With the increase of thermal exposure time, the secondaryM(6)C reduced greatly the yield strength of the alloy at room temperature. Meanwhile, the continuous distribution of the secondaryM(6)C with great brittleness in the grain boundary could become the main source of crack, which might change the fracture characteristic of the alloy from trans-granular to intergranular.
资助项目	National Basic Research Program of China[2010CB631200] ; National Basic Research Program of China[2010CB631206] ; National Natural Science Foundation of China[51701212] ; National Natural Science Foundation of China[50931004] ; National Natural Science Foundation of China[51571196] ; National Natural Science Foundation of China[51601192] ; National Natural Science Foundation of China[51671188] ; State Key Laboratory of Solidification Processing in NWPU[SKLSP201747] ; Liaoning Provincial Natural Science Foundation of China[2019-MS-336]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000539171300001
资助机构	National Basic Research Program of China ; National Natural Science Foundation of China ; State Key Laboratory of Solidification Processing in NWPU ; Liaoning Provincial Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/139358]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xie, Jun
作者单位	1.Shenyang Univ Technol, Shenyang 110870, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Chen, Mao-Kai,Xie, Jun,Shu, De-Long,et al. Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020:10.
APA	Chen, Mao-Kai.,Xie, Jun.,Shu, De-Long.,Hou, Gui-Chen.,Xun, Shu-Ling.,...&Zhou, Yi-Zhou.(2020).Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,10.
MLA	Chen, Mao-Kai,et al."Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020):10.