Fracture toughness in ultra fine-grained magnesium alloy

被引：19
作者：
Somekawa, H
Mukai, T
机构：
[1] NIMS, Ecomat Ctr, Tsukuba, Ibaraki 3050047, Japan
[2] NIMS, ICYS, Tsukuba, Ibaraki 3050047, Japan
来源：
NANOMATERIALS BY SEVERE PLASTIC DEFORMATION | 2006年 / 503-504卷
关键词：
fracture toughness; magnesium alloy; extrusion process; stretched zone; grain refinement;
D O I：
10.4028/www.scientific.net/MSF.503-504.155
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The fracture toughness was investigated using in an extruded AZ31 magnesium alloy with an initial grain size of 1.0 mu m. Since the small scale yielding condition was not satisfied with the present thin thickness, the value of plane-strain fracture toughness, K-IC = 27.9 MPam(1/2), was measured from Stretched Zone analysis. The values of K-IC in AZ31 magnesium alloys were dependent on the grain size. The grain refinement was found to be one of the improvement methods for fracture toughness in magnesium alloy.
引用
收藏
页码：155 / 160
页数：6
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