Study of gamma ' rafting under different stress states - A phase-field simulation considering viscoplasticity

doi:10.1016/j.jallcom.2018.07.317

IMR OpenIR

	Study of gamma ' rafting under different stress states - A phase-field simulation considering viscoplasticity
	Yang, Min 1; Zhang, Jun 1; Wei, Hua 2,3; Zhao, Yan 4; Gui, Weimin 3; Su, Haijun 1; Jin, Tao 3; Liu, Lin 1
通讯作者	Zhang, Jun(zhjscott@nwpu.edu.cn) ; Wei, Hua(huawei@zju.edu.cn)
	2018-11-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	769 页码:453-462
摘要	The gamma'/gamma evolution in nickel superalloys under different stress states and stress values at 1223 K was simulated through the phase-field method to study the 45 degrees-type rafting mechanism and the influence of orientation deviation on the gamma'/gamma evolution. The simulation results demonstrate that for the shear stress case, 45 degrees-type rafting appears under the external shear stress of 137 MPa. In 45 degrees-type rafting, the equivalent stress inhomogeneity in the gamma channel induces a directional diffusion of gamma'-forming elements into the low-equivalent-stress areas which are distributed along the diagonal directions. Based on the simulations, a model for the 45 degrees-type rafting mechanism has been proposed. In addition, the influence of orientation deviation on gamma'/gamma evolution originates from the introduction of shear stress components. With increasing external stress, the shear stress component is increased, which causes the rafting direction to approach the 45 degrees direction. Furthermore, the existence of orientation deviation accelerates the process of gamma' rafting. (C) 2018 Elsevier B.V. All rights reserved.
关键词	Superalloys gamma ' rafting Shear creep Phase-field model Plasticity
资助者	National Natural Science Foundation of China ; National Key Research and Development Program
DOI	10.1016/j.jallcom.2018.07.317
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51331005] ; National Natural Science Foundation of China[51690163] ; National Natural Science Foundation of China[51631008] ; National Natural Science Foundation of China[51371173] ; National Natural Science Foundation of China[51771148] ; National Key Research and Development Program[2016YFB0701405] ; National Key Research and Development Program[2017YFB0702902]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000449481200054
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/130368
专题	中国科学院金属研究所
通讯作者	Zhang, Jun; Wei, Hua
作者单位	1.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China 2.Zhejiang Univ, Ctr Centrifugal Hypergrav Res, Hangzhou 310058, Zhejiang, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Liaoning, Peoples R China 4.Shanghai Univ, State Key Lab Adv Special Steel, Shanghai 200444, Peoples R China
推荐引用方式 GB/T 7714	Yang, Min,Zhang, Jun,Wei, Hua,et al. Study of gamma ' rafting under different stress states - A phase-field simulation considering viscoplasticity[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,769:453-462.
APA	Yang, Min.,Zhang, Jun.,Wei, Hua.,Zhao, Yan.,Gui, Weimin.,...&Liu, Lin.(2018).Study of gamma ' rafting under different stress states - A phase-field simulation considering viscoplasticity.JOURNAL OF ALLOYS AND COMPOUNDS,769,453-462.
MLA	Yang, Min,et al."Study of gamma ' rafting under different stress states - A phase-field simulation considering viscoplasticity".JOURNAL OF ALLOYS AND COMPOUNDS 769(2018):453-462.