Author/Authors :
Tong، نويسنده , , L.B. and Zheng، نويسنده , , M.Y. and Xu، نويسنده , , S.W. and Kamado، نويسنده , , S. and Du، نويسنده , , Y.Z. and Hu، نويسنده , , X.S. and Wu، نويسنده , , K. and Gan، نويسنده , , W.M. and Brokmeier، نويسنده , , H.G. and Wang، نويسنده , , G.J. and Lv، نويسنده , , X.Y.، نويسنده ,
Abstract :
The effect of trace Mn addition on the microstructure, texture and mechanical properties of the as-cast and as-extruded Mg–5.25 wt.% Zn–0.6 wt.% Ca (ZX51) alloys was investigated in this study. Mn addition had a negligible effect on the grain size of the as-cast ZX51 alloy. However, the addition of Mn led to the obvious decrease of grain size in the as-extruded Mg–5.25 wt.% Zn–0.6 wt.% Ca–0.3 wt.% Mn (ZXM510) alloy, because the Mn addition restricted the grain growth during the hot extrusion process. After the addition of Mn, the basal fiber texture with most of {0 0 0 2} planes parallel to the extrusion direction (ED) was significantly enhanced in the as-extruded ZXM510 alloy. Both tensile yield strength (TYS) and ultimate tensile strength (UTS) were increased in the as-extruded ZXM510 alloy, while the ductility was slightly decreased, which was ascribed to the grain refinement and texture strengthening.
Keywords :
Mg–Zn–Ca alloy , Mn , microstructure , Texture , mechanical properties
