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2021 Fiscal Year Research-status Report

Regulation of short-range order and its influence on the multiscale mechanical behaviors in high entropy alloys

Research Project

Project/Area Number 21K03766
Research InstitutionTohoku University

Principal Investigator

魏 代修  東北大学, 金属材料研究所, 助教 (20785810)

Project Period (FY) 2021-04-01 – 2024-03-31
KeywordsHigh entropy alloy / Short range order / Mechanical property / Plasticity / Microstructure
Outline of Annual Research Achievements

High entropy alloys (HEAs) have attracted much academic interest due to their unprecedented microstructure and exceptional properties. The short-range order (SRO) phenomenon in the HEAs is one of the most important issues of concern. The regulation of SRO and its impact on the micro-and macro-plasticity have not been clarified. In FY 2021, we succeeded in demonstrating the principles of SRO formation in the representative CoCrFeMnNi and novelly designed Co-rich HEAs, assisted by the ab initio calculation and Monte Carlo simulation. Moreover, the influence of metalloids on the formation of SRO was investigated. A guideline for regulating SRO was provided. Then, we prepared samples and tuned the characteristics of SRO by aging at various conditions. The SRO-regulated HEAs were characterized by scanning transmission electron microscopy (STEM), in which the morphology and dimension of SRO were measured. The element distributions at SRO domains were revealed by the atomic-resolution energy-dispersive X-ray spectroscopy (EDS) mapping. The correlation between the annealing condition and the SRO characteristics was clarified. The research made a significant contribution to the basic understandings and regulation of the SRO, which promoted the progress of the theories of physical metallurgy and materials science. Moreover, the findings will provide guidelines for developing next-generation advanced HEAs by tailoring the sub-nanoscale SRO features. The proposed research has a significant potential impact on the progress of the basic theories and practices of the research field.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

The applicant proposed the research based on previous studies related to the development of novel HEAs. Besides, the sub-nanoscale elemental distribution in a metalloid-tailored HEA was successfully observed using atomic-resolution STEM-EDS mapping in our preliminary study. Here, we conducted a further STEM investigation. Meanwhile, the formation of SRO was simulated by using Monte-Carlo method, and the international collaboration of thermodynamics and ab initio calculations was progressed. Furthermore, we have successfully prepared the SRO-regulated TWIP and TRIP HEAs. The modification and investigation of SRO characteristics are in progress. The research was progressed based on our previous results and experience, therefore, the research is progressing smoothly.

Strategy for Future Research Activity

In the FY 2022, the following research will be conducted: 1. The SRO in the HEAs will be further tuned and the formation mechanism will be clarified. The element distributions at SRO domains will be revealed by the atomic-resolution EDS mapping. The local strain field distributions will be analyzed. The correlation between annealing condition and SRO characteristics will be clarified. 2. The influence of SRO on incipient plasticity will be investigated by the nanoindentation. The pop-in event corresponding to the nucleation of dislocations will be analyzed systematically. The correlation between dislocation nucleation, micro-mechanical response, and SRO characteristics will be clarified, which helps to predict the macro-mechanical behaviors.

  • Research Products

    (22 results)

All 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (15 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 9 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Int'l Joint Research] KTH Royal Institute of Technology(スウェーデン)

    • Country Name
      SWEDEN
    • Counterpart Institution
      KTH Royal Institute of Technology
  • [Int'l Joint Research] Shanghai Jiao Tong University/Hunan University(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      Shanghai Jiao Tong University/Hunan University
  • [Journal Article] Metalloid substitution elevates simultaneously the strength and ductility of face-centered-cubic high-entropy alloys2022

    • Author(s)
      Wei Daixiu、Wang Liqiang、Zhang Yongjie、Gong Wu、Tsuru Tomohito、Lobzenko Ivan、Jiang Jing、Harjo Stefanus、Kawasaki Takuro、Bae Jae Wung、Lu Wenjun、Lu Zhen、Hayasaka Yuichiro、Kiguchi Takanori、Okamoto Norihiko L.、Ichitsubo Tetsu、Kim Hyoung Seop、Furuhara Tadashi、Ma Evan、Kato Hidemi
    • Journal Title

      Acta Materialia

      Volume: 225 Pages: 117571~117571

    • DOI

      10.1016/j.actamat.2021.117571

  • [Journal Article] Regulation of strength and ductility of single-phase twinning-induced plasticity high-entropy alloys2022

    • Author(s)
      Wei Daixiu、Gong Wu、Kawasaki Takuro、Harjo Stefanus、Kato Hidemi
    • Journal Title

      Scripta Materialia

      Volume: 216 Pages: 114738~114738

    • DOI

      10.1016/j.scriptamat.2022.114738

  • [Journal Article] Harnessing elastic anisotropy to achieve low-modulus refractory high-entropy alloys for biomedical applications2022

    • Author(s)
      Schonecker Stephan、Li Xiaojie、Wei Daixiu、Nozaki Shogo、Kato Hidemi、Vitos Levente、Li Xiaoqing
    • Journal Title

      Materials and Design

      Volume: 215 Pages: 110430~110430

    • DOI

      10.1016/j.matdes.2022.110430

  • [Journal Article] Synergistic enhancement of strength and ductility of cobalt-free maraging steel via nanometer-scaled microstructures2022

    • Author(s)
      Li Hu、Liu Yong、Liu Bin、Wei Daixiu
    • Journal Title

      Materials Science and Engineering A

      Volume: 842 Pages: 143099~143099

    • DOI

      10.1016/j.msea.2022.143099

  • [Journal Article] Surface modification and twinning behavior in gradient graphene-based TiC/Ti6Al4V composite2022

    • Author(s)
      Wang Yingchen、Wei Daixiu、Wang Liqiang、Zhang Ling、Liu Jia、Tang Yujin、Fu Yuanfei、Lu Weijie
    • Journal Title

      Applied Surface Science

      Volume: 583 Pages: 152495~152495

    • DOI

      10.1016/j.apsusc.2022.152495

  • [Journal Article] Densification behavior and the interfacial reaction of Ti/β-Ti laminated composite by spark plasma sintering2022

    • Author(s)
      Yang Peng、Zhang Weidong、Chen Fulin、Wu Zhenggang、Wei Daixiu、Li Xiaofeng
    • Journal Title

      Journal of Alloys and Compounds

      Volume: 897 Pages: 163115~163115

    • DOI

      10.1016/j.jallcom.2021.163115

  • [Journal Article] Intermediate temperature embrittlement in a precipitation-hardened high-entropy alloy: The role of heterogeneous strain distribution and environmentally assisted intergranular damage2022

    • Author(s)
      BX Cao, DX Wei, XF Zhang, HJ Kong, YL Zhao, JX Hou, JH Luan, ZB Jiao, Y Liu, T Yang, CT Liu
    • Journal Title

      Materials Today Physics

      Volume: 24 Pages: 100653

    • DOI

      10.1016/j.mtphys.2022.100653

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Synergetic effect of Si addition on mechanical properties in face-centered-cubic high entropy alloys: a first-principles study2022

    • Author(s)
      Tomohito Tsuru, Ivan Lobzenko, Daixiu Wei
    • Journal Title

      Modelling and Simulation in Materials Science and Engineering

      Volume: 30 Pages: 024003

    • DOI

      10.1088/1361-651X/ac455a

    • Peer Reviewed
  • [Journal Article] Evolution of microstructural complex transitions in low-modulus β-type Ti-35Nb-2Ta-3Zr alloy manufactured by laser powder bed fusion2021

    • Author(s)
      Noman Hafeez, Daixiu Wei, Lechun Xie, Yujin Tang, Jia Liu, Hidemi Kato, Weijie Lu, Lai-Chang Zhang, Liqiang Wang
    • Journal Title

      Additive Manufacturing

      Volume: 48 Pages: 102376

    • DOI

      10.1016/j.addma.2021.102376

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The effect of Si and Ge on the elastic properties and plastic deformation modes in high-and medium-entropy alloys2021

    • Author(s)
      Raquel Lizarraga, Xiaojie Li, Daixiu Wei, Levente Vitos, Xiaoqing Li
    • Journal Title

      Applied Physics Letters

      Volume: 119 Pages: 141904

    • DOI

      10.1063/5.0064939

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High-Temperature Deformation Behaviors of the C-Doped and N-Doped High Entropy Alloys2021

    • Author(s)
      Hailong Yi, Yifan Zhang, Renyi Xie, Mengyuan Bi, Daixiu Wei
    • Journal Title

      Metals

      Volume: 11 Pages: 1517

    • DOI

      10.3390/met11101517

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Strain partitioning enables excellent tensile ductility in precipitated heterogeneous high-entropy alloys with gigapascal yield strength2021

    • Author(s)
      Feng He, Zhongsheng Yang, Shaofei Liu, Da Chen, Weitong Lin, Tao Yang, Daixiu Wei, Zhijun Wang, Jincheng Wang, Ji-jung Kai
    • Journal Title

      International Journal of Plasticity

      Volume: 144 Pages: 103022

    • DOI

      10.1016/j.ijplas.2021.103022

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] New Ti/β-Ti alloy laminated composite processed by powder metallurgy: Microstructural evolution and mechanical property2021

    • Author(s)
      Weidong Zhang, Peng Yang, Yuankui Cao, Xi Li, Daixiu Wei, Hidemi Kato, Zhenggang Wu
    • Journal Title

      Materials Science and Engineering A

      Volume: 822 Pages: 141702

    • DOI

      10.1016/j.msea.2021.141702

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A strategy for enhancing the mechanical property of the precipitation-strengthened medium-entropy alloy2021

    • Author(s)
      Hai-Long Yi, Daixiu Wei, Ren-Yi Xie, Yi-Fan Zhang, Hidemi Kato
    • Journal Title

      Materials Science and Engineering A

      Volume: 819 Pages: 141390

    • DOI

      10.1016/j.msea.2021.141390

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Vapor phase dealloying kinetics of MnZn alloys2021

    • Author(s)
      Zhen Lu, Fan Zhang, Daixiu Wei, Jiuhui Han, Yanjie Xia, Jing Jiang, Mingwang Zhong, Akihiko Hirata, Kentaro Watanabe, Alain Karma, Jonah Erlebacher, Mingwei Chen
    • Journal Title

      Acta Materialia

      Volume: 212 Pages: 116916

    • DOI

      10.1016/j.actamat.2021.116916

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Temperature dependency of plastic deformation behavior in high entropy alloys2022

    • Author(s)
      Daixiu Wei, Hidemi Kato
    • Organizer
      日本金属学会
  • [Presentation] Development of strong and ductile high entropy alloys2021

    • Author(s)
      Daixiu Wei, Hidemi Kato
    • Organizer
      International Conference on Materials and Systems for Sustainability 2021
    • Int'l Joint Research / Invited
  • [Presentation] Temperature dependency of plastic deformation behavior in high entropy alloys2021

    • Author(s)
      Daixiu Wei, Hidemi Kato
    • Organizer
      日本粉体粉末冶金協会
  • [Presentation] Tailoring local structure of high entropy alloys to overcome the strength-ductility trade-off2021

    • Author(s)
      Daixiu Wei, Tomohito Tsuru, Norihiko L. Okamoto, Tetsu Ichitsubo, Hidemi Kato
    • Organizer
      日本金属学会
  • [Presentation] Development of high performance non-equiatomic high entropy alloys2021

    • Author(s)
      Daixiu Wei, Tomohito Tsuru, Norihiko L. Okamoto, Tetsu Ichitsubo, Hidemi Kato
    • Organizer
      東北大学金属材料研究所講演会
    • Int'l Joint Research

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Published: 2022-12-28  

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