Effect of grain size on prismatic slip in Mg-3Al-1Zn alloy

被引:136
|
作者
Razavi, S. M. [1 ]
Foley, D. C. [2 ]
Karaman, I. [1 ,2 ]
Hartwig, K. T. [1 ,2 ]
Duygulu, O. [3 ]
Kecskes, L. J. [4 ]
Mathaudhu, S. N. [4 ]
Hammond, V. H. [4 ]
机构
[1] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA
[2] Texas A&M Univ, Mat Sci & Engn Grad Program, College Stn, TX 77843 USA
[3] TUBITAK MRC, Mat Inst, TR-41470 Gebze, Kocaeli, Turkey
[4] USA, Res Lab, Weap & Mat Res Directorate, Aberdeen Proving Ground, MD 21005 USA
关键词
Prismatic slip; Magnesium alloys; Equal-channel angular pressing/extrusion; Grain size; Hall-Petch relation; CHANNEL ANGULAR EXTRUSION; MAGNESIUM ALLOY; CRYSTALLOGRAPHIC TEXTURE; ROOM-TEMPERATURE; DEFORMATION; DUCTILITY; EVOLUTION; MECHANISMS; ANISOTROPY; SHEET;
D O I
10.1016/j.scriptamat.2012.05.017
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The grain size of Mg-3Al-1Zn magnesium alloy was systematically varied from 33 mu m down to 350 nm, while keeping the crystallographic texture nearly constant, via multi-temperature equal-channel angular processing. Nearly the same texture allowed the activation of mostly prismatic slip in tension and thus evaluation of the effect of grain size on prismatic slip. The maximum tensile yield strength of 385 MPa and ultimate tensile strength of 455 MPa were achieved in materials with an average grain size of 350 nm, accompanied with 13% ductility. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:439 / 442
页数:4
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