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Correlation Between Phase Stability and Tensile Properties of the Ni-Based Superalloy MAR-M247
Li, Linxu1,2; Gong, Xiufang1; Wang, Changshuai3; Wu, Yunsheng3; Yu, Hongyao4,5; Su, Haijun2; Zhou, Lanzhang3
Corresponding AuthorWang, Changshuai(cswang@imr.ac.cn) ; Su, Haijun(shjnpu@nwpu.edu.cn)
2020-10-12
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages13
AbstractPhase stability and its effect on tensile properties of MAR-M247 alloy have been investigated during thermal exposure at 800-900 degrees C for up to 10,000 h. Detailed investigations reveal that the larger secondary gamma ' phase has no obvious growth, but the smaller tertiary gamma ' phase obviously coarsens and the coalescence occurs during thermal exposure at 850 degrees C and below.gamma ' coarsening behavior is consistent with the description of Ostwald ripening theory before gamma ' coalescence. Hf-rich blocky MC carbide shows excellent thermal stability, but Ta-rich script-type MC carbide gradually degenerates via reaction, MC + gamma -> M23C6 + gamma ' and finally forms gamma film around MC and M(23)C(6)carbides. With increasing thermal exposure time, the tensile strength decreases. The ductility first increases and then decreases during exposure at 800 degrees C, but it decreases continuously at 900 degrees C. In addition, the ductility keeps almost constant when the exposure time is longer than 5000 h.
KeywordNi-based superalloy Phase stability Tensile properties Fractural behavior
Funding OrganizationNational Natural Science Foundation of China ; National Science and Technology Major Project of China ; State Key Laboratory of Long-life High Temperature Materials ; LiaoNing Revitalization Talents Program
DOI10.1007/s40195-020-01139-4
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51971216] ; National Natural Science Foundation of China[51301171] ; National Science and Technology Major Project of China[2017-VI-0018-0090] ; State Key Laboratory of Long-life High Temperature Materials[DTCC28EE190231] ; LiaoNing Revitalization Talents Program[XLYC1807038]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000577045500004
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/141046
Collection中国科学院金属研究所
Corresponding AuthorWang, Changshuai; Su, Haijun
Affiliation1.Dong Fang Turbine Co Ltd, State Key Lab Long Life High Temp Mat, Deyang 618000, Peoples R China
2.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
4.Beijing Key Lab Adv High Temp Mat, Beijing 100081, Peoples R China
5.Beijing CISRI GAONA Mat & Technol CO LTD, Beijing 100081, Peoples R China
Recommended Citation
GB/T 7714
Li, Linxu,Gong, Xiufang,Wang, Changshuai,et al. Correlation Between Phase Stability and Tensile Properties of the Ni-Based Superalloy MAR-M247[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020:13.
APA Li, Linxu.,Gong, Xiufang.,Wang, Changshuai.,Wu, Yunsheng.,Yu, Hongyao.,...&Zhou, Lanzhang.(2020).Correlation Between Phase Stability and Tensile Properties of the Ni-Based Superalloy MAR-M247.ACTA METALLURGICA SINICA-ENGLISH LETTERS,13.
MLA Li, Linxu,et al."Correlation Between Phase Stability and Tensile Properties of the Ni-Based Superalloy MAR-M247".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020):13.
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