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Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy
Chen, Mao-Kai1,2; Xie, Jun1; Shu, De-Long1; Hou, Gui-Chen1; Xun, Shu-Ling1; Yu, Jin-Jiang1; Liu, Li-Rong2; Sun, Xiao-Feng1; Zhou, Yi-Zhou1
Corresponding AuthorXie, Jun(junxie@imr.ac.cn)
2020-06-09
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages10
AbstractThe 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.
KeywordK416B superalloy Thermal exposure Deformation mechanism Fracture characteristics
Funding OrganizationNational 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
DOI10.1007/s40195-020-01075-3
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000539171300001
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139361
Collection中国科学院金属研究所
Corresponding AuthorXie, Jun
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Shenyang Univ Technol, Shenyang 110870, Peoples R China
Recommended Citation
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.
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