Optimize the Mechanical Properties of Al0.6CoCrFeNi High-Entropy Alloys by Thermo-Mechanical Processing

被引：8

作者：

Yang, Huijun ^{[1
]}

Tan, Yaqin ^{[1
]}

Qiao, Junwei ^{[1
]}

Hawk, Jeffrey A. ^{[2
]}

Zhang, Yong ^{[3
]}

Gao, Michael ^{[2
,4
]}

Liaw, Peter K. ^{[5
]}

机构：

[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Lab High Entropy Alloys, Taiyuan 030024, Peoples R China

[2] Natl Energy Technol Lab, 1450 Queen Ave SW, Albany, OR 97321 USA

[3] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[4] Dept Leidos Res Support Team, 1450 Queen Ave SW, Albany, OR 97321 USA

[5] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

METALS | 2022年 / 12卷 / 02期

关键词：

high-entropy alloy; thermo-mechanical treatment; microstructure; phase stability; strengthening mechanisms; SOLID-SOLUTION; TENSILE PROPERTIES; STRENGTHENING MECHANISMS; GRAIN-GROWTH; AL ADDITION; MICROSTRUCTURE; DEFORMATION; BEHAVIOR; DUCTILITY; TRANSFORMATION;

D O I：

10.3390/met12020178

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The phase stability, microstructural evolution, and mechanical properties of Al0.6CoCrFeNi high-entropy alloy (HEA) subjected to different thermo-mechanical treatments were systematically investigated in the present study. The face center cubic (FCC) matrix, B2, and minor Body Center Cubic (BCC) phases were observed in the as-cast state. The morphology of the B2 precipitates evolved from needle-like to droplet-shaped when annealed at 900 degrees C, 1000 degrees C, and 1100 degrees C. The resulting yield stress of this FCC/B2 duplex-phase HEA after annealing heat treatments was successfully analyzed based on the contributions from solid solution strengthening, precipitate strengthening, grain boundary hardening, and dislocation hardening.

引用

页数：18

共 70 条

[1]

[Anonymous], 2009, Mater. Today, DOI 10.1016/S1369-7021(09)70086-0.

[2] PRECIPITATION HARDENING [J].

ARDELL, AJ .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1985, 16 (12) :2131-2165

[3]

Askeland D.R., 2003, SCIENCE

[4] Twinning-induced strain hardening in dual-phase FeCoCrNiAl0.5 at room and cryogenic temperature [J].

Bonisch, M. ;

Wu, Y. ;

Sehitoglu, H. .

SCIENTIFIC REPORTS, 2018, 8

[5] Coarsening resistance at 400 °C of precipitation-strengthened Al-Zr-Sc-Er alloys [J].

Booth-Morrison, Christopher ;

Dunand, David C. ;

Seidman, David N. .

ACTA MATERIALIA, 2011, 59 (18) :7029-7042

[6] 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

[7] Effect of C content on microstructure and tensile properties of as-cast CoCrFeMnNi high entropy alloy [J].

Chen, Jian ;

Yao, Zhihao ;

Wang, Xiaobo ;

Lu, Yukun ;

Wang, Xianhui ;

Liu, Yong ;

Fan, Xinhui .

MATERIALS CHEMISTRY AND PHYSICS, 2018, 210 :136-145

[8] Ductile-brittle transition of carbon alloyed Fe40Mn40Co10Cr10 high entropy alloys [J].

Chen, L. B. ;

Wei, R. ;

Tang, K. ;

Zhang, J. ;

Jiang, F. ;

Sun, J. .

MATERIALS LETTERS, 2019, 236 :416-419

[9] EBSD study of grain growth behavior and annealing twin evolution after full recrystallization in a nickel-based superalloy [J].

Chen, Xiao-Min ;

Lin, Y. C. ;

Wu, Fan .

JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 724 :198-207

[10] DEFORMATION TWINNING [J].

CHRISTIAN, JW ;

MAHAJAN, S .

PROGRESS IN MATERIALS SCIENCE, 1995, 39 (1-2) :1-157

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