Mechanical Properties and Microstructure of the CoCrFeMnNi High Entropy Alloy Under High Strain Rate Compression

被引：1
作者：
Bingfeng Wang
Ao Fu
Xiaoxia Huang
Bin Liu
Yong Liu
Zezhou Li
Xiang Zan
机构：
[1] Central South University,State Key Laboratory for Powder Metallurgy
[2] Central South University,School of Materials Science and Engineering
[3] Central South University,Key Lab of Nonferrous Materials, Ministry of Education
[4] University of California,Department of Mechanical and Aerospace Engineering
[5] Hefei University of Technology,School of Materials Science and Engineering
来源：
Journal of Materials Engineering and Performance | 2016年 / 25卷
关键词：
high entropy alloy; serration behavior; spark plasma sintering; strain rate;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The equiatomic CoCrFeMnNi high entropy alloy, which crystallizes in the face-centered cubic (FCC) crystal structure, was prepared by the spark plasma sintering technique. Dynamic compressive tests of the CoCrFeMnNi high entropy alloy were deformed at varying strain rates ranging from 1 × 103 to 3 × 103 s−1 using a split-Hopkinson pressure bar (SHPB) system. The dynamic yield strength of the CoCrFeMnNi high entropy alloy increases with increasing strain rate. The Zerilli-Armstrong (Z-A) plastic model was applied to model the dynamic flow behavior of the CoCrFeMnNi high entropy alloy, and the constitutive relationship was obtained. Serration behavior during plastic deformation was observed in the stress-strain curves. The mechanism for serration behavior of the alloy deformed at high strain rate is proposed.
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页码：2985 / 2992
页数：7
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共 99 条
  • [1] Yeh JW(2004)Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes Adv. Eng. Mater. 6 299-303
  • [2] Chen SK(2004)Formation of Simple Crystal Structures in Cu-Co-Ni-Cr-Al-Fe-Ti-V Alloys with Multiprincipal Metallic Elements Metall. Mater. Trans. A. 35 2533-2536
  • [3] Lin SJ(2014)Microstructures and Properties of High-Entropy Alloys Prog. Mater. Sci. 61 1-93
  • [4] Gan JY(2013)Microstructure and Properties of Al J. Alloys Compd 553 216-220
  • [5] Chin TS(2015)CrFeCoCuTiNi Mater. Sci. Eng. A 648 217-224
  • [6] Shun TT(2009) High-Entropy Alloys Prepared by Laser Cladding J. Alloys Compd 485 31-34
  • [7] Tsau CH(2016)Effects of Co and Ti on Microstructure and Mechanical Behavior of Al Acta Mater. 102 187-196
  • [8] Chang SY(2013)FeNiCrCo High Entropy Alloy Prepared by Mechanical Alloying and Spark Plasma Sintering Acta Mater. 61 5743-5755
  • [9] Yeh JW(2015)Nanocrystalline CoCrFeNiCuAl High-Entropy Solid Solution Synthesized by Mechanical Alloying Intermetallics. 56 24-27
  • [10] Lin SJ(2014)A Precipitation-Hardened High-Entropy Alloy with Outstanding Tensile Properties J. Alloys Compd 591 11-21
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