Effect of Y addition on microstructure and mechanical properties of extruded Mg-Mn alloys

被引：1
作者：
Luo, Xiaoping [1 ]
Daqing Fang [1 ]
Li Kang [1 ]
机构：
[1] Taiyuan Univ Sci & Technol, Taiyuan, Peoples R China
来源：
EMERGING MATERIALS RESEARCH | 2019年 / 8卷 / 04期
关键词：
characterisation; mechanical properties; microscopy; MAGNESIUM ALLOYS; DEFORMATION; PROGRESS;
D O I：
10.1680/jemmr.17.00056
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two homogenized as-cast magnesium (Mg)-1 wt% manganese (Mn) alloys containing 1.0 and 4.0 wt% alloying yttrium (Y) were processed at an extrusion ratio of 17:1 at 400 degrees C using a ram speed of 0.3 mm/s. The effect of yttrium additions on the microstructure and mechanical properties of the extruded alloy was analyzed and compared. The average grain size of the extruded Mg-1Mn-4Y (MW14) alloy was much smaller than that of the extruded Mg-1Mn-1Y (MW11) alloy. In addition, the tensile strength of the MW14 alloy was higher than that of the MW11 alloy at the investigated temperature ranging form RT to 200 degrees C, although the former exhibited a lower elongation to failure. The fracture surface of the MW14 alloy exhibited the cleavage fracture mode. Conversely, a dimple was observed in the MW11 alloy which the significant differences in performance between the two alloys are attributed to their Y contents.
引用
收藏
页码：582 / 587
页数：6
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