Modeling Segregation of Fe-C Alloy in Solidification by Phase-Field Method Coupled with Thermodynamics

doi:10.3390/met13061148

IMR OpenIR

	Modeling Segregation of Fe-C Alloy in Solidification by Phase-Field Method Coupled with Thermodynamics
	Gong, Tong-Zhao 1; Chen, Yun 1; Hao, Wei-Ye 1,2; Chen, Xing-Qiu 1; Li, Dian-Zhong 1
通讯作者	Li, Dian-Zhong(dzli@imr.ac.cn)
	2023-06-01
发表期刊	METALS
卷号	13 期号:6 页码:13
摘要	The primary carbide in high carbon chromium bearing steels, which arises from solute segregation during non-equilibrium solidification, is one of the key factors affecting the mechanical properties and performance of the related components. In this work, the effects of carbide forming element diffusion, primary austenite grain size, and the cooling rate on solute segregation and carbide precipitation during the solidification of an Fe-C binary alloy were studied by the phase-field method coupled with a thermodynamic database. It was clarified that increasing the ratio of solute diffusivity in solid and liquid, refining the grain size of primary austenite to lower than a critical value, and increasing the cooling rate can reduce the solute segregation and precipitation of primary carbide at late solidification. Two characteristic parameters were introduced to quantitatively evaluate the solute segregation during solidification including the phase fraction threshold of primary austenite when the solute concentration in liquid reaches the eutectic composition, and the maximum segregation ratio. Both parameters can be well-correlated to the ratio of solute diffusivity in solid and liquid, the grain size of primary austenite, and the cooling rate, which provides potential ways to control the solute segregation and precipitation of primary carbide in bearing steels.
关键词	phase-field method solidification Fe-C alloy solute segregation primary carbide
资助者	National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Young Talents Project of SYNL ; Strategic Priority Research Program of the Chinese Academy of Sciences
DOI	10.3390/met13061148
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52203301] ; China Postdoctoral Science Foundation[2021TQ0335] ; Young Talents Project of SYNL[2021000559] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04000000]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001014740100001
出版者	MDPI
引用统计	被引频次：5[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/321006/178373
专题	中国科学院金属研究所
通讯作者	Li, Dian-Zhong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Gong, Tong-Zhao,Chen, Yun,Hao, Wei-Ye,et al. Modeling Segregation of Fe-C Alloy in Solidification by Phase-Field Method Coupled with Thermodynamics[J]. METALS,2023,13(6):13.
APA	Gong, Tong-Zhao,Chen, Yun,Hao, Wei-Ye,Chen, Xing-Qiu,&Li, Dian-Zhong.(2023).Modeling Segregation of Fe-C Alloy in Solidification by Phase-Field Method Coupled with Thermodynamics.METALS,13(6),13.
MLA	Gong, Tong-Zhao,et al."Modeling Segregation of Fe-C Alloy in Solidification by Phase-Field Method Coupled with Thermodynamics".METALS 13.6(2023):13.