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Effects of Mn and Al addition on structural and magnetic properties of FeCoNi-based high entropy alloys
Feng, Wenqiang1,2,4; Qi, Yang3; Wang, Shaoqing1
Corresponding AuthorFeng, Wenqiang(wqfeng14b@imr.ac.cn)
2018-10-01
Source PublicationMATERIALS RESEARCH EXPRESS
ISSN2053-1591
Volume5Issue:10Pages:13
AbstractThe effects of Mn and Al additions on the structural stability and magnetic properties of FeCoNi-based alloys were investigated by density functional theory. The simulation results show that adding Al into FeCoNi alloy leads to the transformation of alloy structure from FCC to BCC with B2 structure. The doping of non-magnetic Al reduces the saturation magnetization, regardless alloy structure is FCC, BCC or B2 phase. The FeCoNiMn alloy prefers to form L1(2) structure to diminish the magnetic frustration. In the L1(2) structure, Mn minority spin peak moves from above to below Fermi level, further increasing Mn magnetic moment. For FeCoNi(MnAl)(x) alloys, the alloy structures change from FCC to BCC with the increase of Mn and Al content. The Mn atoms are transformed from antiferromagnetic to ferromagnetic order and the saturation magnetizations are significantly enhanced due to phase transition. It is found that there is obvious short-range order (SRO) in FeCoNi(MnAl)(2) alloy. The SRO parameters are positive between Al-Al, Co-Co, Co-Ni pairs and negative between Ni-Al, Co-Al, Co-Mn, and Mn-Ni pairs. The electronic structure near the Fermi level shows significant difference from random solid structure, which will affect magnetic and electrical properties of FeCoNi(MnAl)(2) alloy.
Keywordhigh entropy alloys short-range order density functional theory Monte Carlo simulation
Funding OrganizationNational Natural Science Foundation of China ; National Key R&D Program of China ; CAS Frontier Science Research Project ; Informalization Construction Project of Chinese Academy of Sciences
DOI10.1088/2053-1591/aadaa7
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51471164] ; National Key R&D Program of China[2016YFB0701302] ; CAS Frontier Science Research Project[QYZDJ-SSW-JSC015] ; Informalization Construction Project of Chinese Academy of Sciences[INFO-115-B01]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000442686800005
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129062
Collection中国科学院金属研究所
Corresponding AuthorFeng, Wenqiang
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
2.Univ Sci & Technol Liaoning, Coll Sci, Anshan 114051, Liaoning, Peoples R China
3.Northeastern Univ, Coll Sci, Shenyang 110819, Liaoning, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Feng, Wenqiang,Qi, Yang,Wang, Shaoqing. Effects of Mn and Al addition on structural and magnetic properties of FeCoNi-based high entropy alloys[J]. MATERIALS RESEARCH EXPRESS,2018,5(10):13.
APA Feng, Wenqiang,Qi, Yang,&Wang, Shaoqing.(2018).Effects of Mn and Al addition on structural and magnetic properties of FeCoNi-based high entropy alloys.MATERIALS RESEARCH EXPRESS,5(10),13.
MLA Feng, Wenqiang,et al."Effects of Mn and Al addition on structural and magnetic properties of FeCoNi-based high entropy alloys".MATERIALS RESEARCH EXPRESS 5.10(2018):13.
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