A comparison of the microstructures and hardness values of non-equiatomic (FeNiCo)-(AlCrSiTi) high entropy alloys having thermal histories related to laser direct metal deposition or vacuum remelting

doi:10.1016/j.jmrt.2021.08.046

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	A comparison of the microstructures and hardness values of non-equiatomic (FeNiCo)-(AlCrSiTi) high entropy alloys having thermal histories related to laser direct metal deposition or vacuum remelting
	Tang, Yanchuan 2,3; Wan, Neng 2,3; Shen, Mingxue 2,3; H., Jiao ; D., Liu ; X., Tang ; L., Zhao
刊名	Journal of Materials Research and Technology
	2021-11-01
卷号	15 页码:696-707
关键词	Deposition Entropy Hardness High-entropy alloys Phase composition Remelting Silicon Al-Cr-Si Casting process Conventional casting Direct metal deposition Hardness values High entropy alloys In-phase Laser direct metal deposition Thermal history Vacuum remelting
ISSN号	22387854
DOI	10.1016/j.jmrt.2021.08.046
英文摘要	Compared with conventional casting process, laser direct metal deposition (LDMD) can effectively reduce component segregation in non-equiatomic high entropy alloys (HEAs). However, the non-equilibrium thermal history imparted by this method has a significant effect on the microstructure and mechanical properties of the HEA. The present work prepared non-equiatomic (FeNiCo)-(AlCrSiTi) HEAs using the LDMD process, after which some samples were subjected to a subsequent vacuum remelting (VRM) treatment. The variations in phase composition, microstructure and hardness between the HEAs processed using the LDMD or VRM methods were investigated. Differences in phase composition increased with increases in the proportion of the Al, Cr, Si and Ti components. Compared with the HEA samples processed using the VRM method, the LDMD specimens possessed much finer and simpler microstructures mainly comprising solid solution phases. At relatively high concentrations of the Al, Cr, Si and Ti components (32 at% and 40 at% in total), the HEAs processed under LDMD conditions had similar grain morphologies, intermetallic phases and microhardness values, while the VRM specimens presented completely different microstructures and properties. © 2021 The Author(s)
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Editora Ltda
WOS记录号	WOS:000734203600009
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150930]
专题	兰州理工大学
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, East China Jiaotong University, Nanchang; 330013, China; 3.Key Laboratory of Advanced Materials for Vehicles & Laser Additive Manufacturing of Nanchang City, East China Jiaotong University, Nanchang; 330013, China; 4.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Tang, Yanchuan,Wan, Neng,Shen, Mingxue,et al. A comparison of the microstructures and hardness values of non-equiatomic (FeNiCo)-(AlCrSiTi) high entropy alloys having thermal histories related to laser direct metal deposition or vacuum remelting[J]. Journal of Materials Research and Technology,2021,15:696-707.
APA	Tang, Yanchuan.,Wan, Neng.,Shen, Mingxue.,H., Jiao.,D., Liu.,...&L., Zhao.(2021).A comparison of the microstructures and hardness values of non-equiatomic (FeNiCo)-(AlCrSiTi) high entropy alloys having thermal histories related to laser direct metal deposition or vacuum remelting.Journal of Materials Research and Technology,15,696-707.
MLA	Tang, Yanchuan,et al."A comparison of the microstructures and hardness values of non-equiatomic (FeNiCo)-(AlCrSiTi) high entropy alloys having thermal histories related to laser direct metal deposition or vacuum remelting".Journal of Materials Research and Technology 15(2021):696-707.