Effects of Ta on the high temperature creep behavior and deformation mechanism of a Ni-based single crystal superalloy

doi:10.1016/j.msea.2024.147335

IMR OpenIR

	Effects of Ta on the high temperature creep behavior and deformation mechanism of a Ni-based single crystal superalloy
	Ge, Mingtao 1,2; Li, Yongmei 1; Wang, Xinguang 1; Chu, Zhaokuang 1; Tao, Yan 1; Tan, Zihao 1; Liu, Jide 1; Yang, Yanhong 1; Liu, Jinlai 1; Zhang, Chunhua 2; Zhang, Song 2; Li, Jinguo 1; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Wang, Xinguang(xgwang11b@imr.ac.cn) ; Zhang, Chunhua(zhangch5858@126.com)
	2024-11-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	916 页码:10
摘要	The effects of Ta on the high temperature creep behavior and deformation mechanism in a Ni-based single crystal (SX) superalloy were investigated at 1120 degrees C/137 MPa. Ta was regarded as an essential strengthening element of the gamma' phase in the alloy, and the results indicated that the increase of Ta prolonged the creep rupture life. In this work, the addition of Ta increased the volume fraction of the gamma' phase and narrowed the gamma channels, making the dislocation bowing out at the primary stage of creep more difficult. As creep continued, with a lower effective diffusion coefficient of alloying elements and larger gamma' raft thickness, the alloy with 6.5 wt% Ta addition was considered to possess the lower dislocation climbing rate, which reduced the minimum creep rate of the alloys. Subsequently, it was noted that the density of superdislocations in gamma' phase was clearly reduced with the increase of Ta. This was supposed to be the elevated Ta content in the alloy, which increased the lattice misfit and led to the formation of a denser dislocation network, thereby enhancing the interfacial strengthening effect and effectively preventing the cutting of superdislocations. The Ta effect on high-temperature creep was systematically summarized in this study, which was an important guideline for further composition design and optimization of Ni-based SX superalloys.
关键词	Ta Single crystal superalloy Creep behavior Microstructural evolution Deformation mechanism
资助者	National Key Research and Development Program of China ; Middle-aged and Youth Talents in Scientific and Technological Inno-vation Project of Shenyang ; Excellent Youth Foundation of Liaoning Province
DOI	10.1016/j.msea.2024.147335
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFA0700704] ; Middle-aged and Youth Talents in Scientific and Technological Inno-vation Project of Shenyang[RC220440] ; Excellent Youth Foundation of Liaoning Province[2021-YQ-02]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001333329900001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/190610
专题	中国科学院金属研究所
通讯作者	Wang, Xinguang; Zhang, Chunhua
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Shenyang Univ Technol, Sch Mat Sci & Engn, 111 Shenliao Rd, Shenyang 110870, Peoples R China
推荐引用方式 GB/T 7714	Ge, Mingtao,Li, Yongmei,Wang, Xinguang,et al. Effects of Ta on the high temperature creep behavior and deformation mechanism of a Ni-based single crystal superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,916:10.
APA	Ge, Mingtao.,Li, Yongmei.,Wang, Xinguang.,Chu, Zhaokuang.,Tao, Yan.,...&Sun, Xiaofeng.(2024).Effects of Ta on the high temperature creep behavior and deformation mechanism of a Ni-based single crystal superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,916,10.
MLA	Ge, Mingtao,et al."Effects of Ta on the high temperature creep behavior and deformation mechanism of a Ni-based single crystal superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 916(2024):10.