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Effect of aluminum content on the texture and mechanical behavior of Mg-1 wt% Mn wrought magnesium alloys

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Title Effect of aluminum content on the texture and mechanical behavior of Mg-1 wt% Mn wrought magnesium alloys
 
Creator BIAN, MZ
TRIPATHI, A
YU, H
NAM, ND
YAN, LM
 
Subject SINGLE-CRYSTALS
NONBASAL SLIP
DEFORMATION
MICROSTRUCTURE
RECRYSTALLIZATION
ANISOTROPY
EVOLUTION
SOLUTE
Magnesium alloys
Extrusion
Dynamic recrystallization
Twinning
 
Description The mechanical response of as-extruded magnesium-aluminum-manganese alloy with varying (1-4 wft) aluminum content has been examined, while the concentration of manganese is kept constant at 1 wt%. Results indicated that microstructure exhibits more uniform and equiaxed grain structure, and gradual decrease of texture intensity with increasing aluminum content. Mechanical testing results revealed tensile and compressive yield strengths decreased, while yield anisotropy, tensile uniform elongation and strain hardening exponent increased with increasing aluminum content. Weaker texture was considered to be responsible for lower yield strength, and in particular for significant decrease in tensile yield strength. In addition, simulation results revealed that prismatic and basal slips played a very important role during tensile deformation, and the contribution of prismatic slip decreased with increase in aluminum content. On the other hand, {10 (1) over bar2} twin was the major deformation mode at the initial stage of the compressive deformation in addition to the basal slip, and the relative activity of the {1012} twin decreased with increasing aluminum content. (C) 2015 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2016-01-15T04:42:23Z
2016-01-15T04:42:23Z
2015
 
Type Article
 
Identifier MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 639,320-326
0921-5093
1873-4936
http://dx.doi.org/10.1016/j.msea.2015.05.022
http://dspace.library.iitb.ac.in/jspui/handle/100/17785
 
Language en