Deformation Behavior of Magnesium Single Crystal in c-axis Compression and a-axis Tension

被引：43

作者：

Ando, Shinji ^{[1
]}

Tsushida, Masayuki ^{[2
]}

Kitahara, Hiromoto ^{[1
]}

机构：

[1] Kumamoto Univ, Dept Mat Sci & Engn, Kumamoto 860, Japan

[2] Kumamoto Univ, Fac Engn, Kumamoto 860, Japan

来源：

PRICM 7, PTS 1-3 | 2010年 / 654-656卷

关键词：

Magnesium; single crystal; pyramidal slip; twin; yield stress; fracture; PYRAMIDAL SLIP; ALLOY AZ31B;

D O I：

10.4028/www.scientific.net/MSF.654-656.699

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In general, deformation behavior of magnesium in compression is different from tensile. To investigate deformation behavior of magnesium single crystals by non-basal slips and twins, c-axis compression and a-axis tension tests were performed in the range of 77K-573K. The crystals were yielded by second order pyramidal slip, and the yield stress shows anomalous temperature dependence (increased with increasing temperature) between 203K and 293K. Yield stress of c-axis compression was bigger than that of a-axis tensile. In compression, fracture surface were (11 (2) over bar4) under 293K and were {30 (3) over bar4} above 373K, and fracture strain was smaller than the case of tension test. {10 (1) over bar1}-{10 (1) over bar2} double twin were activated at higher temperature and the crystal, therefore, fractured along the twin interface.

引用

页码：699 / +

页数：2

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