Study to Microstructure and Mechanical Properties of Mg Containing High Entropy Alloys

被引：85
作者：
Li, Rui [1 ]
Gao, Jiacheng [1 ]
Fan, Ke [1 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400030, Peoples R China
来源：
ENERGY AND ENVIRONMENT MATERIAL S | 2010年 / 650卷
关键词：
high entropy alloy; quasicrystal; microstructure; mechanical properties; PHASE;
D O I：
10.4028/www.scientific.net/MSF.650.265
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, alloys with compositions of Mg-x(MnAlZnCu)(100-x) (x: atomic percentage; x=20, 33, 43, 45.6 and 50 respectively) were designed by using the strategy of equiatomic ratio and high entropy of mixing. Microstructure and mechanical properties of the new high entropy alloy were studied. The alloys were prepared by induction melting and then were cast in a copper mold in air. The alloy samples were examined by microhardness tester, XRD, SEM, thermal analyzer and testing machine for material strength. Alloys were composed mainly of h.c.p phase and Al-Mn icosahedral quasicrystal phases. The alloys exhibited moderate densities which were from 4.29g.cm(-3) to 2.20g.cm(-3), high hardness (429HV-178HV) and high compression strength (500MPa-400MPa) at room temperature. The extensibility was increased with Mg from 20at% (atomic percentage) to 50at%.
引用
收藏
页码：265 / 271
页数：7
相关论文
共 15 条
[1]   INFLUENCE OF THE QUENCHING CONDITIONS ON THE FORMATION OF THE ICOSAHEDRAL PHASE IN AL-MN ALLOYS [J].
BIGOT, J ;
YUZHANG, K ;
HARMELIN, M .
MATERIALS SCIENCE AND ENGINEERING, 1988, 99 :453-456
[2]  
Boer F., 1989, Cohesion in Metals: Transition Metal Alloys, V1
[3]   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
[4]   Moisture induced environmental embrittlement of intermetallics [J].
Chen, GL ;
Liu, CT .
INTERNATIONAL MATERIALS REVIEWS, 2001, 46 (06) :253-270
[5]   MATERIALS SCIENCE - CONFUSION BY DESIGN [J].
GREER, AL .
NATURE, 1993, 366 (6453) :303-304
[6]   Recent progress in bulk glassy, nanoquasicrystalline and nanocrystalline alloys [J].
Inoue, A ;
Takeuchi, A .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 375 (1-2 SPEC. ISS.) :16-30
[7]   COMPRESSION TESTING OF QUASI-CRYSTALLINE MATERIALS [J].
KANG, SS ;
DUBOIS, JM .
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1992, 66 (01) :151-163
[8]   A HIGHLY PROCESSABLE METALLIC-GLASS - ZR41.2TI13.8CU12.5NI10.0BE22.5 [J].
PEKER, A ;
JOHNSON, WL .
APPLIED PHYSICS LETTERS, 1993, 63 (17) :2342-2344
[9]  
PORTER KA, 1981, PHASE TRANSFORMATION
[10]   METALLIC PHASE WITH LONG-RANGE ORIENTATIONAL ORDER AND NO TRANSLATIONAL SYMMETRY [J].
SHECHTMAN, D ;
BLECH, I ;
GRATIAS, D ;
CAHN, JW .
PHYSICAL REVIEW LETTERS, 1984, 53 (20) :1951-1953
12