Nanomechanical Behavior of CoCrFeMnNi High-Entropy Alloy

被引：19
|
作者：
Mridha, Sanghita [1 ]
Das, Santanu [1 ]
Aouadi, Samir [1 ]
Mukherjee, Sundeep [1 ]
Mishra, Rajiv S. [1 ]
机构：
[1] Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76203 USA
来源：
JOM | 2015年 / 67卷 / 10期
关键词：
DISLOCATION NUCLEATION; MECHANICAL-PROPERTIES; DEFORMATION-BEHAVIOR; INCIPIENT PLASTICITY; CORROSION PROPERTIES; SINGLE-CRYSTALS; SIZE; NANOINDENTATION; MICROSTRUCTURE; NI3AL;
D O I：
10.1007/s11837-015-1566-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The nanomechanical behavior of the Co20Cr20Fe20Mn20Ni20 high-entropy alloy was investigated in as-cast, rolled, annealed, and thin-film forms. Dislocation nucleation was studied by repeated indents at a low load for each of the different processing conditions. Distinct displacement bursts (pop in) were observed in the loading curve marked by incipient plasticity for all the samples. The as-cast and annealed samples showed pop ins for 100% of the indents, whereas the rolled and thin-film samples showed a much lower fraction of displacement bursts. This was explained by the high density of dislocations for the cold-worked and thin-film conditions. The strong depth dependence of hardness was explained by geometrically necessary dislocations. The nanomechanical behavior and twinned microstructure indicate low stacking-fault energy for this high-entropy alloy.
引用
收藏
页码：2296 / 2302
页数：7
相关论文
共 50 条
  • [21] Stacking fault strengthening in CoCrFeMnNi high-entropy alloy
    Duan, Mengye
    Fu, Tao
    Pan, Yang
    Liu, Xuyang
    Peng, Xianghe
    APPLIED PHYSICS LETTERS, 2023, 122 (17)
  • [22] Stretch-flangeability of CoCrFeMnNi high-entropy alloy
    Choi, Yeon Taek
    Bae, Jae Wung
    Park, Jeong Min
    Lee, Hak Hyeon
    Kwon, Hyeonseok
    Son, Sujung
    Ahn, Dong-Hyun
    Kim, Hyoung Seop
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2021, 814
  • [23] Superior antifouling properties of a CoCrFeMnNi high-entropy alloy
    Son, Sujung
    Kim, Sinyang
    Kwak, Jaeik
    Gu, Gang Hee
    Hwang, Dong Soo
    Kim, Yong-Tae
    Kim, Hyoung Seop
    MATERIALS LETTERS, 2021, 300
  • [24] High-entropy alloy CoCrFeMnNi produced by powder metallurgy
    Eissmann, Nadine
    Kloeden, Burghardt
    Weissgaerber, Thomas
    Kieback, Bernd
    POWDER METALLURGY, 2017, 60 (03) : 184 - 197
  • [25] Defect energetics in an high-entropy alloy fcc CoCrFeMnNi
    Gao, Chan
    Wang, Shuyu
    Liu, Xiao
    Singh, Chandra Veer
    MATERIALS ADVANCES, 2024, 5 (10): : 4231 - 4241
  • [26] Sintering mechanism of CoCrFeMnNi high-entropy alloy powders
    Mane, Rahul B.
    Rajkumar, Y.
    Panigrahi, Bharat B.
    POWDER METALLURGY, 2018, 61 (02) : 131 - 138
  • [27] Vacancy formation enthalpy in CoCrFeMnNi high-entropy alloy
    Sugita, Kazuki
    Matsuoka, Naoki
    Mizuno, Masataka
    Araki, Hideki
    SCRIPTA MATERIALIA, 2020, 176 : 32 - 35
  • [28] Effect of hydrogen-induced surface steps on the nanomechanical behavior of a CoCrFeMnNi high-entropy alloy revealed by in-situ electrochemical nanoindentation
    Wang, Dong
    Lu, Xu
    Deng, Yun
    Wan, Di
    Li, Zhiming
    Barnoush, Afrooz
    INTERMETALLICS, 2019, 114
  • [29] Deep Drawing Behavior of CoCrFeMnNi High-Entropy Alloys
    Jae Wung Bae
    Jongun Moon
    Min Ji Jang
    Dong-Hyun Ahn
    Soo-Hyun Joo
    Jaimyun Jung
    Dami Yim
    Hyoung Seop Kim
    Metallurgical and Materials Transactions A, 2017, 48 : 4111 - 4120
  • [30] Edge-Cracking Behavior of CoCrFeMnNi High-Entropy Alloy During Hot Rolling
    Won, Jong Woo
    Kang, Minju
    Kwon, Heoun-Jun
    Lim, Ka Ram
    Seo, Seong Moon
    Na, Young Sang
    METALS AND MATERIALS INTERNATIONAL, 2018, 24 (06) : 1432 - 1437
12345