Manufacturing of High Entropy Alloys

被引：56
作者：
Jablonski, Paul D. [1 ]
Licavoli, Joseph J. [1 ]
Gao, Michael C. [1 ,2 ]
Hawk, Jeffrey A. [1 ]
机构：
[1] Natl Energy Technol Lab, Albany, OR 97321 USA
[2] AECOM, Albany, OR USA
来源：
JOM | 2015年 / 67卷 / 10期
关键词：
PHASE-STABILITY; GRAIN-GROWTH; MICROSTRUCTURE; EVOLUTION;
D O I：
10.1007/s11837-015-1540-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High entropy alloys (HEAs) have generated interest in recent years due to their unique positioning within the alloy world. By incorporating a number of elements in high proportion they have high configurational entropy, and thus they hold the promise of interesting and useful properties such as enhanced strength and phase stability. The present study investigates the microstructure of two single-phase face-centered cubic (FCC) HEAs, CoCrFeNi and CoCrFeNiMn, with special attention given to melting, homogenization and thermo-mechanical processing. Large-scale ingots were made by vacuum induction melting to avoid the extrinsic factors inherent in small-scale laboratory button samples. A computationally based homogenization heat treatment was applied to both alloys in order to eliminate segregation due to normal ingot solidification. The alloys fabricated well, with typical thermo-mechanical processing parameters being employed.
引用
收藏
页码：2278 / 2287
页数：10
相关论文
共 21 条
[1]   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
[2]   Influence of Ti addition and sintering method on microstructure and mechanical behavior of a medium-entropy Al0.6CoNiFe alloy [J].
Fu, Zhiqiang ;
Chen, Weiping ;
Chen, Zhen ;
Wen, Haiming ;
Lavernia, Enrique J. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 619 :137-145
[3]   Searching for Next Single-Phase High-Entropy Alloy Compositions [J].
Gao, Michael C. ;
Alman, David E. .
ENTROPY, 2013, 15 (10) :4504-4519
[4]  
Huang K.-H., 1996, Masters Thesis
[5]  
Jablonski P.D., 2014, 8 INT S SUP 718 DER, P741, DOI [10.1002/9781119016854.ch65/summary, DOI 10.1002/9781119016854.CH65/SUMMARY]
[6]   Homogenizing a Nickel-Based Superalloy: Thermodynamic and Kinetic Simulation and Experimental Results [J].
Jablonski, Paul D. ;
Cowen, Christopher J. .
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2009, 40 (02) :182-186
[7]  
Jablonski PD, 2013, P 2013 INT S LIQ MET, P329
[8]   Microstructure and mechanical property of as-cast, -homogenized, and -deformed AlxCoCrFeNi (0 ≤ x ≤ 2) high-entropy alloys [J].
Kao, Yih-Farn ;
Chen, Ting-Jie ;
Chen, Swe-Kai ;
Yeh, Jien-Wei .
JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 488 (01) :57-64
[9]   Grain growth and the Hall-Petch relationship in a high-entropy FeCrNiCoMn alloy [J].
Liu, W. H. ;
Wu, Y. ;
He, J. Y. ;
Nieh, T. G. ;
Lu, Z. P. .
SCRIPTA MATERIALIA, 2013, 68 (07) :526-529
[10]   Entropy-driven phase stability and slow diffusion kinetics in an Al0.5CoCrCuFeNi high entropy alloy [J].
Ng, Chun ;
Guo, Sheng ;
Luan, Junhua ;
Shi, Sanqiang ;
Liu, C. T. .
INTERMETALLICS, 2012, 31 :165-172
123