Effect of Ta Addition on the Microstructure and Tensile Properties of a Ni-Co Base Superalloy

doi:10.1007/s11661-020-06081-9

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	Effect of Ta Addition on the Microstructure and Tensile Properties of a Ni-Co Base Superalloy
	Zhu, C. Z.1,3; Zhang, R.3; Cui, C. Y.3; Zhou, Y. Z.3; Yuan, Y.2; Yu, Z. S.2; Liu, X.2; Sun, X. F.3
刊名	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
	2020-11-09
卷号	52 期号:1 页码:11
ISSN号	1073-5623
DOI	10.1007/s11661-020-06081-9
通讯作者	Zhang, R.(rzhang@imr.ac.cn) ; Cui, C. Y.(chycui@imr.ac.cn)
英文摘要	Herein, the effect of Ta addition (0 and 2 wt pct) on the tensile properties of a Ni-Co base superalloy was investigated in the temperature range of 23-900 degrees C. The results revealed that the addition of Ta improved the strength of the superalloy at all experimental temperatures and increased the plasticity at 760 degrees C. In addition, the microstructural observations indicate that Ta addition promoted the precipitation of gamma ' precipitates, as well as the precipitation of (Ta, Ti)-rich MC carbides. The addition of 2 wt pct Ta promoted twinning and, thus, transformed the fracture mechanism of the alloy from an intergranular brittle fracture to a mixed ductile and brittle fracture at 760 degrees C. Furthermore, the tensile properties and the related microstructures, deformation mechanisms, and fracture mechanisms of the experimental alloys are discussed. Finally, we demonstrated that the combined effect of the increase in the grain boundary strength, the reduction in the critical resolved shear stress, and the promotion of twinning induced the synchronous improvement of strength and plasticity of the alloy at 760 degrees C.
资助项目	National Natural Science Foundation of China[51671189] ; Ministry of Science and Technology of China[2017YFA0700703] ; Ministry of Science and Technology of China[2019YFA0705304]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000588003200001
资助机构	National Natural Science Foundation of China ; Ministry of Science and Technology of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/141252]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, R.; Cui, C. Y.
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Peoples R China 2.Xian Thermal Power Res Inst Co Ltd, 136 Xingqing Rd, Xian 710032, Peoples R China 3.Chinese Acad Sci, Inst Metal Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhu, C. Z.,Zhang, R.,Cui, C. Y.,et al. Effect of Ta Addition on the Microstructure and Tensile Properties of a Ni-Co Base Superalloy[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2020,52(1):11.
APA	Zhu, C. Z..,Zhang, R..,Cui, C. Y..,Zhou, Y. Z..,Yuan, Y..,...&Sun, X. F..(2020).Effect of Ta Addition on the Microstructure and Tensile Properties of a Ni-Co Base Superalloy.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,52(1),11.
MLA	Zhu, C. Z.,et al."Effect of Ta Addition on the Microstructure and Tensile Properties of a Ni-Co Base Superalloy".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 52.1(2020):11.