Faceted Kurdjumov-Sachs interface-induced slip continuity in the eutectic high-entropy alloy, AlCoCrFeNi2.1

doi:10.1016/j.jmst.2020.04.073

	Faceted Kurdjumov-Sachs interface-induced slip continuity in the eutectic high-entropy alloy, AlCoCrFeNi2.1
	Xiong, Ting 1,2; Yang, Wenfan 1,2; Zheng, Shijian 1,3; Liu, Zhaorui 4,5,6; Lu, Yiping 7; Zhang, Ruifeng 4,5,6; Zhou, Yangtao 1; Shao, Xiaohong 1; Zhang, Bo 1; Wang, Jun 8
	2021-02
发表期刊	Journal of Materials Science and Technology
ISSN	10050302
卷号	65 页码:216-227
摘要	Recently, the eutectic high-entropy alloy (EHEA), AlCoCrFeNi2.1, can reach a good balance of strength and ductility. The dual-phase alloy exhibits a eutectic lamellar microstructure with large numbers of interfaces. However, the role of the interfaces in plastic deformation have not been revealed deeply. In the present work, the orientation relationship (OR) of the interfaces has been clarified as the Kurdjumov-Sachs (KS) interfaces presenting 111B2\|\|110FCC and 110B2\|\|111FCC independent of their morphologies. There exist three kinds of interfaces in the EHEA, namely, (321)B2\|\|(112)FCC, (011)B2\|\|(332)FCC, and (231)B2\|\|(552)FCC. The dominating (321)B2\|\|(112)FCC interface and the secondary (011)B2\|\|(332)FCC interface are both non-slip planes and atomistic-scale faceted, facilitating the nucleation and slip transmission of the dislocations. The formation mechanism of the preferred interfaces is revealed using the atomistic geometrical analysis according to the criteria of the low interfacial energy based on the coincidence-site lattice (CSL) theory. In particular, the ductility of the dual-phase alloy originates from the KS interface-induced slip continuity across interfaces, which provides a high slip-transfer geometric factor. Moreover, the strengthening effect can be attributed to the interface resistance for the dislocation transmission due to the mismatches of the moduli and lattice parameters at the interfaces. © 2020
关键词	Crystal lattices Ductility Entropy Eutectics High-entropy alloys Transmissions Coincidence site lattices Formation mechanism Geometrical analysis Interface resistance Lamellar microstructure Orientation relationship Strength and ductilities Strengthening effect
DOI	10.1016/j.jmst.2020.04.073
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000609935300022
出版者	Chinese Society of Metals
EI入藏号	20204209354446
EI主题词	Lattice theory
EI分类号	531.2 Metallography - 602.2 Mechanical Transmissions - 641.1 Thermodynamics - 922.2 Mathematical Statistics - 933.1.1 Crystal Lattice - 951 Materials Science
来源库	Compendex
分类代码	531.2 Metallography - 602.2 Mechanical Transmissions - 641.1 Thermodynamics - 922.2 Mathematical Statistics - 933.1.1 Crystal Lattice - 951 Materials Science
引用统计	被引频次：64[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/115745
专题	材料科学与工程学院材料科学与工程学院_特聘教授组
通讯作者	Zheng, Shijian; Zhang, Ruifeng; Liaw, Peter K.; Ma, Xiuliang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China; 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China; 3.Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin Key Lab Mat Laminating Fabricat & Interfa, Tianjin 300130, Peoples R China; 4.Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China; 5.Beihang Univ, Ctr Integrated Computat Mat Engn, Int Res Inst Multidisciplinary Sci, Minist Ind & Informat Technol, Beijing 100191, Peoples R China; 6.Beihang Univ, Key Lab High Temp Struct Mat & Coatings Technol, Minist Ind & Informat Technol, Beijing 100191, Peoples R China; 7.Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Solidificat Control & Digital Preparat Te, Dalian 116024, Peoples R China; 8.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China; 9.Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA; 10.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
通讯作者单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Xiong, Ting,Yang, Wenfan,Zheng, Shijian,et al. Faceted Kurdjumov-Sachs interface-induced slip continuity in the eutectic high-entropy alloy, AlCoCrFeNi2.1[J]. Journal of Materials Science and Technology,2021,65:216-227.
APA	Xiong, Ting.,Yang, Wenfan.,Zheng, Shijian.,Liu, Zhaorui.,Lu, Yiping.,...&Ma, Xiuliang.(2021).Faceted Kurdjumov-Sachs interface-induced slip continuity in the eutectic high-entropy alloy, AlCoCrFeNi2.1.Journal of Materials Science and Technology,65,216-227.
MLA	Xiong, Ting,et al."Faceted Kurdjumov-Sachs interface-induced slip continuity in the eutectic high-entropy alloy, AlCoCrFeNi2.1".Journal of Materials Science and Technology 65(2021):216-227.