Correlation Between Phase Stability and Tensile Properties of the Ni-Based Superalloy MAR-M247

doi:10.1007/s40195-020-01139-4

IMR OpenIR

	Correlation Between Phase Stability and Tensile Properties of the Ni-Based Superalloy MAR-M247
	Li, Linxu 1,2; Gong, Xiufang 1; Wang, Changshuai 3; Wu, Yunsheng 3; Yu, Hongyao 4,5; Su, Haijun 2; Zhou, Lanzhang 3
通讯作者	Wang, Changshuai(cswang@imr.ac.cn) ; Su, Haijun(shjnpu@nwpu.edu.cn)
	2020-10-12
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	13
摘要	Phase 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.
关键词	Ni-based superalloy Phase stability Tensile properties Fractural behavior
资助者	National 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
DOI	10.1007/s40195-020-01139-4
收录类别	SCI
语种	英语
资助项目	National 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研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000577045500004
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/141046
专题	中国科学院金属研究所
通讯作者	Wang, Changshuai; Su, Haijun
作者单位	1.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
推荐引用方式 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.