Superplastic Behavior in High-Pressure Torsion-Processed Mo7.5Fe55Co18Cr12.5Ni7Medium-Entropy Alloy

被引：12
作者：
Nguyen, Nhung Thi-Cam [1 ,2 ]
Asghari-Rad, Peyman [1 ,2 ]
Bae, Jae Wung [3 ]
Sathiyamoorthi, Praveen [1 ,2 ]
Kim, Hyoung Seop [1 ,2 ,4 ]
机构：
[1] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 37673, South Korea
[2] Pohang Univ Sci & Technol POSTECH, Ctr High Entropy Alloys, Pohang 37673, South Korea
[3] Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany
[4] Pohang Univ Sci & Technol POSTECH, Grad Inst Ferrous Technol, Pohang 37673, South Korea
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2021年 / 52卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
HIGH-ENTROPY ALLOYS; LOW-TEMPERATURE SUPERPLASTICITY; DEFORMATION; PRINCIPLES; FRACTURE; METALS; GROWTH;
D O I：
10.1007/s11661-020-06033-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present study, superplasticity of high-pressure torsion-processed non-equiatomic Mo(7.5)Co(18)Cr(12.5)Fe(55)Ni(7)medium-entropy alloy with nanograins was investigated. The superplastic elongation of 505 pct was achieved at a temperature of 800 degrees C and a low strain rate. The precipitation of the mu phase enriched with Mo hinders the grain boundary migration and also acts as the origin for cavity and crack formation.
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页码：1 / 7
页数：7
相关论文
共 44 条
[1]   Fine-tuning of mechanical properties in V10Cr15Mn5Fe35Co10Ni25 high-entropy alloy through high-pressure torsion and annealing [J].
Asghari-Rad, Peyman ;
Sathiyamoorthi, Praveen ;
Nhung Thi-Cam Nguyen ;
Bae, Jae Wung ;
Shahmir, Hamed ;
Kim, Hyoung Seop .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2020, 771
[2]   Effect of Initial Grain Size on Deformation Mechanism during High-Pressure Torsion in V10Cr15Mn5Fe35Co10Ni25 High-Entropy Alloy [J].
Asghari-Rad, Peyman ;
Sathiyamoorthi, Praveen ;
Bae, Jae Wung ;
Shahmir, Hamed ;
Zargaran, Alireza ;
Kim, Hyoung Seop .
ADVANCED ENGINEERING MATERIALS, 2020, 22 (01)
[3]   Effect of grain size on the tensile behavior of V10Cr15Mn5Fe35Co10Ni25 high entropy alloy [J].
Asghari-Rad, Peyman ;
Sathiyamoorthi, Praveen ;
Bae, Jae Wung ;
Moon, Jongun ;
Park, Jeong Min ;
Zargaran, Alireza ;
Kim, Hyoung Seop .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 744 :610-617
[4]   Effect of μ-precipitates on the microstructure and mechanical properties of non-equiatomic CoCrFeNiMo medium-entropy alloys [J].
Bae, Jae Wung ;
Park, Jeong Min ;
Moon, Jongun ;
Choi, Won Mi ;
Lee, Byeong-Joo ;
Kim, Hyoung Seop .
JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 781 :75-83
[5]   Exceptional phase-transformation strengthening of ferrous medium entropy alloys at cryogenic temperatures [J].
Bae, Jae Wung ;
Seol, Jae Bok ;
Moon, Jongun ;
Sohn, Seok Su ;
Jang, Min Ji ;
Um, Ho Yong ;
Lee, Byeong-Joo ;
Kim, Hyoung Seop .
ACTA MATERIALIA, 2018, 161 :388-399
[6]   Deformation mechanisms of Mo alloyed FeCoCrNi high entropy alloy: In situ neutron diffraction [J].
Cai, Biao ;
Liu, Bin ;
Kabra, Saurabh ;
Wang, Yiqiang ;
Yan, Kun ;
Lee, Peter D. ;
Liu, Yong .
ACTA MATERIALIA, 2017, 127 :471-480
[7]   Microstructural development in equiatomic multicomponent alloys [J].
Cantor, B ;
Chang, ITH ;
Knight, P ;
Vincent, AJB .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 375 :213-218
[8]   Evolution of Microstructures and Properties in AlxCrFeMn0.8Ni2.1 HEAs [J].
Chen, Xu ;
Gao, Di ;
Hu, Jia Xuan ;
Liu, Ye ;
Tang, Chang Ping .
METALS AND MATERIALS INTERNATIONAL, 2019, 25 (05) :1135-1144
[9]   Cavity nucleation and growth in superplasticity [J].
Chokshi, AH .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 410 :95-99
[10]  
CHOKSHI AH, 1986, J MATER SCI, V21, P2073, DOI 10.1007/BF00547949
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