Influence of the heat treatment processes on the properties of high entropy alloys based on Al-Cr-Fe-Mn-Ni system

被引：0
作者：
Mitrica D. [1 ]
Soare V. [1 ]
Constantin I. [1 ]
Burada M. [1 ]
Olaru M.T. [1 ]
Badilita V. [2 ]
Soare V. [1 ]
Stoiciu F. [3 ]
Popescu G. [4 ]
Carcea I. [5 ]
机构：
[1] National R and D Institute for Nonferrous and Rare Metals, New Materials and Technologies Laboratory, 102 Biruintei Blvd, Pantelimon
[2] National R and D Institute for Nonferrous and Rare Metals, Physical and Chemical Laboratory, 102 Biruintei Blvd, Pantelimon
[3] National R and D Institute for Nonferrous and Rare Metals, Microscopic Characterization Laboratory, 102 Biruintei Blvd, Pantelimon
[4] Polytechnic University of Bucharest, Centre for Research and Expertizing of Special Materials, 313 Splaiul Independentei, Sector 6, Bucharest
[5] Gheorghe Asachi Technical University of Iasi, Faculty of Materials Science and Engineering, 67 Profesor Dimitrie Mangeron Blvd., Iasi
来源：
Mitrica, Dumitru (dmitrica@imnr.ro) | 1600年 / ASTM International卷 / 06期
关键词：
Characterization; Heat treatment; High entropy alloy;
D O I：
10.1520/MPC20170018
中图分类号：
学科分类号：
摘要：
In the present paper, high entropy alloys based on an aluminum-chromium-iron-manganese-nickel (Al-Cr-Fe-Mn-Ni) system were prepared by induction melting and annealed in an inert atmosphere. The resulting samples were analyzed by optical microscopy, scanning electron microscopy, and X-ray diffraction to determine the structural characteristics before and after the heat treatment process. Significant phase transformations and changes in the phase distribution were noticed after the heat treatment process. The results were discussed against the thermodynamic criteria calculations for most promising compositions. Hardness tests were provided for the selected samples to indicate the changes in the mechanical properties between various compositions and between as-cast and annealed samples. Results indicated that the heat treatment process determined a significant hardness increase in one of the studied high entropy alloys. © Copyright 2017 by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959.
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