Intrinsic stacking fault energy and mechanism for deformation twin formation of solid solution matrix in Ni-based superalloys

doi:10.1016/j.vacuum.2022.111322

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	Intrinsic stacking fault energy and mechanism for deformation twin formation of solid solution matrix in Ni-based superalloys
	Chen, Jianjun 1,2; Ding, Yutian 1,2; Zhang, Xia 1,2; Gao, Yubi 1,2; Ma, Yuanjun 1,2
刊名	Vacuum
	2022-09-01
卷号	203
关键词	Alloying Alloying elements Aluminum alloys Binary alloys Cobalt alloys Deformation Lattice constants Nickel alloys Solid solutions Stacking faults Superalloys Deformation twin Dynamics simulation Element contents Equilibrium lattice constant Fault energy Intrinsic stacking fault Intrinsic stacking fault energy matrix Molecular dynamic simulation Ni based alloy
ISSN号	0042-207X
DOI	10.1016/j.vacuum.2022.111322
英文摘要	Molecular dynamics simulations were used to calculate the equilibrium lattice constant and intrinsic stacking fault energy (γISF) of binary, ternary, and quaternary Ni-based solid solution alloys formed by substituting Ni atoms in the matrix with Cr, Co, and Al. Molecular dynamics simulations were also used to monitor the compression deformation behavior of Ni-based alloys with different γISF values at room temperature. The results show that the relative ability to reduce the γISF is Co ISF decreases with an increase in the alloying element content. The γISF of Ni–Cr–Co alloys is a linear combination of the content of Cr and Co. The addition of Al, complicated the chemical interaction between Ni and the alloying elements, and the γISF of some Ni–Cr–Al, Ni–Co–Al, and Ni–Cr–Co–Al solid solution alloys fluctuate up and down with an increase in alloying element content. The formation of deformation twins resulted from the sequential expansion of stacking fault planes. The process of alloying with elements with a lower γISF means that it is easier to form deformation twins. © 2022 Elsevier Ltd
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000836912300001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159366]
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 Material Science and Engineering, Lanzhou University of Technology, Gansu, Lanzhou; 730050, China 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Gansu, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Chen, Jianjun,Ding, Yutian,Zhang, Xia,et al. Intrinsic stacking fault energy and mechanism for deformation twin formation of solid solution matrix in Ni-based superalloys[J]. Vacuum,2022,203.
APA	Chen, Jianjun,Ding, Yutian,Zhang, Xia,Gao, Yubi,&Ma, Yuanjun.(2022).Intrinsic stacking fault energy and mechanism for deformation twin formation of solid solution matrix in Ni-based superalloys.Vacuum,203.
MLA	Chen, Jianjun,et al."Intrinsic stacking fault energy and mechanism for deformation twin formation of solid solution matrix in Ni-based superalloys".Vacuum 203(2022).