Effect of Ta on Tensile Behavior and Deformation Mechanism of a Nickel-Based Single Crystal Superalloy

doi:10.1007/s40195-024-01753-6

IMR OpenIR

	Effect of Ta on Tensile Behavior and Deformation Mechanism of a Nickel-Based Single Crystal Superalloy
	Ge, Mingtao 1,2; Wang, Xinguang 1; Li, Yongmei 1; Tan, Zihao 1; Tao, Xipeng 1; Yang, Yanhong 1; Wang, Liang 1; Zhang, Chunhua 2; Zhang, Song 2; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Wang, Xinguang(xgwang11b@imr.ac.cn) ; Zhang, Chunhua(zhangch5858@126.com)
	2024-07-22
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	14
摘要	The effects of Ta on the tensile behavior and deformation mechanisms of a Ni-based single crystal superalloy were investigated in this study from room temperature to elevated temperature. The findings demonstrated that the higher content of Ta could improve the tensile properties of the alloy at different temperatures. Due to the different deformation mechanisms at various temperatures, the influence of Ta on tensile deformation varied. At room temperature, the higher content of Ta enhanced the solid solution strengthening, which would enhance the tensile strength of 6.5Ta alloy. After standard heat treatment of 6.5Ta alloy, precipitation of the secondary gamma ' phase would hinder the movement of dislocations. When the temperature was elevated to 760 degrees C, the higher content of Ta not only promoted the interaction of stacking faults to form Lomer-Cottrell (L-C) locks that impeded dislocation motion, but also reduced the occurrence of dislocation pile-up groups, thus enhancing the yield strength. At 1120 degrees C, due to the narrower gamma channels and higher APB energy in gamma ' phase of the alloy with higher Ta addition, the processes of bypassing and shearing of dislocations were hindered, respectively. Meanwhile, the denser and more regular dislocation networks were formed in 6.5Ta alloy; and thus, the tensile strength of 6.5Ta alloy was enhanced. This study systematically investigated the effect of Ta on the tensile behavior at three different temperatures, which provided an important theoretical basis for the design of nickel-based single crystal superalloys in the future.
关键词	Ta Single crystal superalloy Tensile behavior Stacking fault Deformation mechanism
资助者	National Key Research and Development Program of China ; Middleaged and Youth Talents in Scientific and Technological Innovation Project of Shenyang ; Excellent Youth Foundation of Liaoning Province
DOI	10.1007/s40195-024-01753-6
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFA0700704] ; Middleaged and Youth Talents in Scientific and Technological Innovation Project of Shenyang[RC220440] ; Excellent Youth Foundation of Liaoning Province[2021-YQ-02]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001274308600004
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188448
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, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China
推荐引用方式 GB/T 7714	Ge, Mingtao,Wang, Xinguang,Li, Yongmei,et al. Effect of Ta on Tensile Behavior and Deformation Mechanism of a Nickel-Based Single Crystal Superalloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2024:14.
APA	Ge, Mingtao.,Wang, Xinguang.,Li, Yongmei.,Tan, Zihao.,Tao, Xipeng.,...&Sun, Xiaofeng.(2024).Effect of Ta on Tensile Behavior and Deformation Mechanism of a Nickel-Based Single Crystal Superalloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,14.
MLA	Ge, Mingtao,et al."Effect of Ta on Tensile Behavior and Deformation Mechanism of a Nickel-Based Single Crystal Superalloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2024):14.