Effects of Nickel Content on High Temperature Coarsening of γ' Phase in Co-8.8Al-9.8W Alloys

doi:10.11896/j.issn.1005-023X.2018.06.016

	Effects of Nickel Content on High Temperature Coarsening of γ' Phase in Co-8.8Al-9.8W Alloys
	Xu, Yangtao 1,2; Lou, Dechao 1,2; Chen, Baolin 1,2
刊名	Cailiao Daobao/Materials Review
	2018-03-25
卷号	32 期号:3 页码:943-946
关键词	Coarsening Cobalt alloys Morphology Nickel Ostwald ripening Particle size analysis Scanning electron microscopy Ternary alloys Coarsening behavior Coarsening rates Field emission scanning electron microscopes High temperature Image analysis method Irregular shape Phase coarsening Two-phase microstructures
ISSN号	1005023X
DOI	10.11896/j.issn.1005-023X.2018.06.016
英文摘要	The influence of nickel contents (5%, 15%, 25%, 35%, at%) on γ/γ' two-phase microstructure and γ' phase coarsening behavior of Co-8.8Al-9.8W based high temperature alloy at 1 000 for 5 h, 10 h, 15 h and 25 h was studied by field emission scanning electron microscope (FE-SEM) and image analysis method. The results show that the rapid growths of γ' phase and volume fraction of γ' phase decrease gradually with the increase of aging time. When Ni content is 5% and 15%, γ' phase completely dissolved at 10 h. When Ni content is 25% and 35%, the morphology of γ' phase shifted from initial cubic shape to irregular shape. Finally, it tend to be spherical, the size of γ' phase will also increase with the increase of aging time. The coarsening of γ' particles of the alloy follows LSW theory. The coarsening rate of 25Ni alloy is higher than that of 35Ni alloy. © 2018, Materials Review Magazine. All right reserved.
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114142]
专题	材料科学与工程学院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.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Xu, Yangtao,Lou, Dechao,Chen, Baolin. Effects of Nickel Content on High Temperature Coarsening of γ' Phase in Co-8.8Al-9.8W Alloys[J]. Cailiao Daobao/Materials Review,2018,32(3):943-946.
APA	Xu, Yangtao,Lou, Dechao,&Chen, Baolin.(2018).Effects of Nickel Content on High Temperature Coarsening of γ' Phase in Co-8.8Al-9.8W Alloys.Cailiao Daobao/Materials Review,32(3),943-946.
MLA	Xu, Yangtao,et al."Effects of Nickel Content on High Temperature Coarsening of γ' Phase in Co-8.8Al-9.8W Alloys".Cailiao Daobao/Materials Review 32.3(2018):943-946.