Optimization of strength by microstructural refinement of MgY2Zn1 alloy during extrusion and ECAP processing

被引：54
作者：
Garces, G. [1 ]
Munoz-Morris, M. A. [1 ]
Morris, D. G. [1 ]
Perez, P. [1 ]
Adeva, P. [1 ]
机构：
[1] CENIM CSIC, Dept Met Phys, E-28040 Madrid, Spain
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 614卷
关键词：
Magnesium alloys; ECAP; Mechanical property; LPSO phase; STACKING ORDERED STRUCTURES; ZN-Y ALLOYS; MECHANICAL-PROPERTIES; GRAIN-REFINEMENT; ZR ALLOY; LONG; DEFORMATION; EVOLUTION; STRAIN; PHASE;
D O I：
10.1016/j.msea.2014.07.012
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A MgY2Zn1 alloy composed of a Mg matrix and about 19% of LPSO phase has been prepared by casting and further processing at high temperature by extrusion and equal channel angular pressing (ECAP). After extrusion an elongated microstructure was obtained in the direction of extrusion where the LPSO phase appears partially broken and the Mg matrix is partially recrystallized to very fine grain size. ECAP processing carried out both in the as-cast and extruded alloy leads to further grain refinement by recrystallization and also to further comminution of the LPSO particles. The increase in strength of the alloy by the different processing routes has been analysed in terms of the contributions from the LPSO particles and the deformed and the recrystallized grains in the magnesium matrix. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：96 / 105
页数：10
相关论文
共 44 条
[1]   Long-period ordered structure in a high-strength nanocrystalline Mg-1 at% Zn-2 at% Y alloy studied by atomic-resolution Z-contrast STEM [J].
Abe, E ;
Kawamura, Y ;
Hayashi, K ;
Inoue, A .
ACTA MATERIALIA, 2002, 50 (15) :3845-3857
[2]   STRENGTHENING OF COMPOSITES DUE TO MICROSTRUCTURAL CHANGES IN THE MATRIX [J].
ARSENAULT, RJ ;
WANG, L ;
FENG, CR .
ACTA METALLURGICA ET MATERIALIA, 1991, 39 (01) :47-57
[3]   THE ELASTICITY AND STRENGTH OF PAPER AND OTHER FIBROUS MATERIALS [J].
COX, HL .
BRITISH JOURNAL OF APPLIED PHYSICS, 1952, 3 (MAR) :72-79
[4]   Microstructural characterization of an extruded Mg-Ni-Y-RE alloy processed by equal channel angular extrusion [J].
Eddahbi, M. ;
Perez, P. ;
Monge, M. A. ;
Garces, G. ;
Pareja, R. ;
Adeva, P. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 473 (1-2) :79-86
[5]   The structure of long period stacking/order Mg-Zn-RE phases with extended non-stoichiometry ranges [J].
Egusa, D. ;
Abe, E. .
ACTA MATERIALIA, 2012, 60 (01) :166-178
[6]  
Garcés G, 2006, INT J MATER RES, V97, P404
[7]   Effect of microstructure on creep behaviour of cast Mg97Y2Zn1 (at.%) alloy [J].
Garces, G. ;
Onorbe, E. ;
Dobes, F. ;
Perez, P. ;
Antoranz, J. M. ;
Adeva, P. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 539 :48-55
[8]  
Garces G., 2014, INTERMETALLICS
[9]   Deformation behaviour in rapidly solidified Mg97Y2Zn (at.%) alloy [J].
Garces, Gerardo ;
Maeso, Maria ;
Todd, Iain ;
Perez, Pablo ;
Adeva, Paloma .
JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 432 (1-2) :L10-L14
[10]   The effect of strain path on the development of deformation structures in severely deformed aluminium alloys processed by ECAE [J].
Gholinia, A ;
Prangnell, PB ;
Markushev, MV .
ACTA MATERIALIA, 2000, 48 (05) :1115-1130
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