Impact of grain boundaries on microstructure evolution during deformation of a magnesium tricrystal

被引：9
|
作者：
Schreiber, Marcel [1 ]
Molodov, Konstantin D. [1 ,2 ]
Al-Samman, Talal [1 ]
Korte-Kerzel, Sandra [1 ]
Molodov, Dmitri A. [1 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Phys Met & Met Phys, D-52056 Aachen, Germany
[2] Salzgitter Mannesmann Forsch GmbH, Dept Mat & Proc Dev, Eisenhuttenstr 99, D-38239 Salzgitter, Germany
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 742卷
关键词：
Magnesium; Tricrystal; Grain boundary; Deformation twinning; Dislocation slip; Dynamic recrystallization; DYNAMIC RECRYSTALLIZATION; SINGLE-CRYSTALS; PLASTIC-DEFORMATION; COMPRESSION TWINS; VARIANT SELECTION; STRAIN; SLIP; MG; DEPENDENCE; DUCTILITY;
D O I：
10.1016/j.msea.2018.11.002
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The deformation behavior of specially grown magnesium tricrystals was studied, where two of the grains were chosen to primarily exhibit prismatic slip, while the third grain was oriented for tension twinning. In all three grains basal slip was initially suppressed. Identical tricrystalline samples with grain boundaries and the triple line aligned parallel to the direction of loading were deformed by plane strain compression at 370 degrees C up to select strains. The mechanical response and microstructure evolution in the deformed tricrystals were comprehensively characterized and analyzed with a particular focus on the role of grain boundaries for deformation twinning, dislocation slip activity and dynamic recrystallization.
引用
收藏
页码：295 / 304
页数：10
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