Effect of Ta and Ni on γ′ phase morphology and compression behavior of Co-8.8Al-9.8W superalloys

doi:10.1016/j.msea.2022.142739

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	Effect of Ta and Ni on γ′ phase morphology and compression behavior of Co-8.8Al-9.8W superalloys
	Xu, Yangtao 1,2; Lv, Xin 1,2; Ma, Tengfei 1,2; Li, Huai 1,2; Wang, Tongchao 1,2
刊名	Materials Science and Engineering A
	2022-04-06
卷号	839
关键词	Cobalt alloys Compressive strength High resolution transmission electron microscopy Morphology Nickel alloys Plastic deformation Scanning electron microscopy Superalloys Tantalum alloys Ternary alloys Tungsten alloys Co-8.8al-9.8w alloy Cobalt-based superalloy Compression behaviours Dislocation structures Morphology behavior Phase compression Phase morphology Phase particles Plastic deformation behavior Γ′ phase
ISSN号	0921-5093
DOI	10.1016/j.msea.2022.142739
英文摘要	To investigate the effect of the γ′ phase morphology of cobalt-based superalloys on the plastic deformation behavior of the superalloys, Co-8.8Al-9.8W-2X (X=Ta, Ni) alloys were prepared to obtain superalloys with different morphologies of γ′ phases. The microstructure and room temperature compression behavior of superalloys were studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results showed that the γ′ phase particles of 2Ta alloy are cubic, while that of 2Ni alloy is spherical. The compressive strength of 2Ta and 2Ni alloys are almost the same, but the hardness of 2Ta alloy is higher than that of 2Ni alloy, while the plastic deformability is significantly worse. 2Ta alloy exhibits quasi-cleavage fracture during compression, while 2Ni alloy showed a cleavage fracture, and amount of slip bands were found easily on the fracture surface of 2Ni alloy. The deformations of 2Ni alloy and 2Ta alloy were dominated by dislocations shearing γ′ phase particles. The γ′ phase of the 2Ni alloy underwent rafting, while that of 2Ta alloy did not change significantly. © 2022 Elsevier B.V.
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000761796200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158040]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Xu, Yangtao,Lv, Xin,Ma, Tengfei,et al. Effect of Ta and Ni on γ′ phase morphology and compression behavior of Co-8.8Al-9.8W superalloys[J]. Materials Science and Engineering A,2022,839.
APA	Xu, Yangtao,Lv, Xin,Ma, Tengfei,Li, Huai,&Wang, Tongchao.(2022).Effect of Ta and Ni on γ′ phase morphology and compression behavior of Co-8.8Al-9.8W superalloys.Materials Science and Engineering A,839.
MLA	Xu, Yangtao,et al."Effect of Ta and Ni on γ′ phase morphology and compression behavior of Co-8.8Al-9.8W superalloys".Materials Science and Engineering A 839(2022).