Micro-Tensile Behavior of Mg-Al-Zn Alloy Processed by Equal Channel Angular Pressing (ECAP)

被引:21
作者
Mathis, Kristian [1 ,2 ]
Kover, Michal [3 ]
Straska, Jitka [1 ]
Trojanova, Zuzanka [1 ]
Dzugan, Jan [3 ]
Halmesova, Kristyna [3 ]
机构
[1] Charles Univ Prague, Fac Math & Phys, Dept Phys Mat, Ke Karlovu 5, Prague 12116 2, Czech Republic
[2] CAS, Inst Nucl Phys, Rez 25068, Czech Republic
[3] COMTES FHT, Prumyslova 995, Dobrany 33441, Czech Republic
关键词
magnesium alloy; equal channel angular pressing; processing route; miniaturized tensile tests; slip systems; twinning; SEVERE PLASTIC-DEFORMATION; EXTRUDED AX41 MAGNESIUM; MECHANICAL-PROPERTIES; GRAIN-REFINEMENT; SAMPLE-SIZE; TEXTURE; TEMPERATURE; MICROSTRUCTURE; ANISOTROPY; EXTRUSION;
D O I
10.3390/ma11091644
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Commercially available AZ31 magnesium alloy was four times extruded in an equal rectangular channel using three different routes (A, B, and C). Micro tensile deformation tests were performed at room temperature with the aim to reveal any plastic anisotropy developed during the extrusion. Samples for micro tensile experiments were cut from extruded billets in different orientations with respect to the pressing direction. Information about the microstructure of samples was obtained using the electron back-scatter diffraction (EBSD) technique. Deformation characteristics (yield stress, ultimate tensile stress and uniform elongation) exhibited significant anisotropy as a consequence of different orientations between the stress direction and texture and thus different deformation mechanisms.
引用
收藏
页数:11
相关论文
共 25 条
[1]   Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B [J].
Agnew, SR ;
Duygulu, Ö .
INTERNATIONAL JOURNAL OF PLASTICITY, 2005, 21 (06) :1161-1193
[2]   Analysis of microstructure and texture evolution in pure magnesium during symmetric and asymmetric rolling [J].
Beausir, Benoit ;
Biswas, Somjeet ;
Kim, Dong Ik ;
Toth, Laszlo S. ;
Suwas, Satyam .
ACTA MATERIALIA, 2009, 57 (17) :5061-5077
[3]   On the influence of the grain size and solute content on the AE response of magnesium alloys tested in tension and compression [J].
Bohlen, Jan ;
Dobron, Patrik ;
Swiostek, Jacek ;
Letzig, Dietmar ;
Chmelik, Frantisek ;
Lukac, Pavel ;
Kainer, Karl Ulrich .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 462 (1-2) :302-306
[4]   Temperature dependency of slip and twinning in plane strain compressed magnesium single crystals [J].
Chapuis, Adrien ;
Driver, Julian H. .
ACTA MATERIALIA, 2011, 59 (05) :1986-1994
[5]   Improvement of strength of magnesium alloy processed by equal channel angular extrusion [J].
Ding, S. X. ;
Lee, W. T. ;
Chang, C. P. ;
Chang, L. W. ;
Kao, P. W. .
SCRIPTA MATERIALIA, 2008, 59 (09) :1006-1009
[6]   Microforming at elevated temperature - forming and material behaviour [J].
Eichenhueller, Bernd ;
Egerer, Emil ;
Engel, Ulf .
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2007, 33 (1-2) :119-124
[7]   Severe plastic deformation as a means of producing uItra-fine-grained net-shaped micro electro-mechanical systems parts [J].
Estrin, Y. ;
Janecek, M. ;
Raab, G. I. ;
Valiev, R. Z. ;
Zi, A. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2007, 38A (09) :1906-1909
[8]   Significance of twinning in the anisotropic behavior of a magnesium alloy processed by equal-channel angular pressing [J].
Figueiredo, Roberto B. ;
Szaraz, Zoltan ;
Trojanova, Zuzanka ;
Lukac, Pavel ;
Langdon, Terence G. .
SCRIPTA MATERIALIA, 2010, 63 (05) :504-507
[9]   Grain refinement and mechanical behavior of a magnesium alloy processed by ECAP [J].
Figueiredo, Roberto B. ;
Langdon, Terence G. .
JOURNAL OF MATERIALS SCIENCE, 2010, 45 (17) :4827-4836
[10]  
Fu EKY, 2004, ULTRAFINE GRAINED MATERIALS III, P547