Calculation and construction of deformation mechanism maps and processing maps for CoCrFeMnNi and Al0.5CoCrFeMnNi high-entropy alloys

被引:25
作者
Jeong, H. T. [1 ]
Kim, W. J. [1 ]
机构
[1] Hongik Univ, Dept Mat Sci & Engn, Sangsu Dong 72-1, Seoul 121791, South Korea
基金
新加坡国家研究基金会;
关键词
High entropy alloys; Deformation mechanism maps; Processing maps; Deformation mechanism equations; Grain size; HIGH-TEMPERATURE DEFORMATION; SERRATED FLOW BEHAVIOR; DYNAMIC RECRYSTALLIZATION; TENSILE PROPERTIES; MICROSTRUCTURAL EVOLUTION; CREEP DEFORMATION; SOLID-SOLUTION; WEAR BEHAVIOR; HIGH-STRENGTH; DIFFUSION;
D O I
10.1016/j.jallcom.2021.159256
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Though extensive studies have been performed on high entropy alloys, there is still a lack of understanding of their high-temperature deformation mechanisms. By systematically analyzing the high-temperature behavior of fine-grained and coarse-grained CoCrFeMnNi and Al0.5CoCrFeMnNi high-entropy alloys (HEAs) studied in this work and reported in the literature, their constitutive deformation equations for dislocation climb creep, grain boundary sliding, and solute drag creep were determined. Based on the identified deformation mechanism equations, deformation mechanism maps and processing maps for CoCrFeMnNi and Al0.5CoCrFeMnNi alloys could be calculated and constructed. Ultimately, the processing maps could be combined with deformation mechanism maps in 2D or 3D. The proposed maps will be useful in predicting the optimum hot working conditions at various grain sizes and in different operating temperature and strain-rate ranges as well as identifying the deformation mechanisms at the corresponding conditions. The same approaches can be used for calculating the deformation mechanism and processing maps for other HEAs with different crystal structure and compositions. (C) 2021 Elsevier B.V. All rights reserved.
引用
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页数:16
相关论文
共 89 条
[81]   Solid Solution or Intermetallics in a High-Entropy Alloy [J].
Wang, Yan Ping ;
Li, Bang Sheng ;
Fu, Heng Zhi .
ADVANCED ENGINEERING MATERIALS, 2009, 11 (08) :641-644
[82]   In-situ neutron diffraction studies on high-temperature deformation behavior in a CoCrFeMnNi high entropy alloy [J].
Woo, Wanchuck ;
Huang, E-Wen ;
Yeh, Jien-Wei ;
Choo, Hahn ;
Lee, Chi ;
Tu, Shan-Yi .
INTERMETALLICS, 2015, 62 :1-6
[83]   Irradiation Resistance in Al x CoCrFeNi High Entropy Alloys [J].
Xia, S. Q. ;
Yang, X. ;
Yang, T. F. ;
Liu, S. ;
Zhang, Y. .
JOM, 2015, 67 (10) :2340-2344
[84]   An efficient way of increasing the total entropy of mixing in high-entropy-alloy compounds: a case of NaCl-type (Ag,In,Pb,Bi)Te1-xSex(x=0.0, 0.25, 0.5) superconductors [J].
Yamashita, Aichi ;
Jha, Rajveer ;
Goto, Yosuke ;
Matsuda, Tatsuma D. ;
Aoki, Yuji ;
Mizuguchi, Yoshikazu .
DALTON TRANSACTIONS, 2020, 49 (26) :9118-9122
[85]   High-entropy alloy: challenges and prospects [J].
Ye, Y. F. ;
Wang, Q. ;
Lu, J. ;
Liu, C. T. ;
Yang, Y. .
MATERIALS TODAY, 2016, 19 (06) :349-362
[86]   Friction and wear behavior of a single-phase equiatomic TiZrHfNb high-entropy alloy studied using a nanoscratch technique [J].
Ye, Y. X. ;
Liu, C. Z. ;
Wang, H. ;
Nieh, T. G. .
ACTA MATERIALIA, 2018, 147 :78-89
[87]   Alloy Design Strategies and Future Trends in High-Entropy Alloys [J].
Yeh, Jien-Wei .
JOM, 2013, 65 (12) :1759-1771
[88]   Nanostructured high-entropy alloys with multiple principal elements: Novel alloy design concepts and outcomes [J].
Yeh, JW ;
Chen, SK ;
Lin, SJ ;
Gan, JY ;
Chin, TS ;
Shun, TT ;
Tsau, CH ;
Chang, SY .
ADVANCED ENGINEERING MATERIALS, 2004, 6 (05) :299-303
[89]   Tensile creep properties of a CrMnFeCoNi high-entropy alloy [J].
Zhang, M. ;
George, E. P. ;
Gibeling, J. C. .
SCRIPTA MATERIALIA, 2021, 194