کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1261047 971776 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and mechanical properties of Mg-Zn-Mn-Sn-Nd wrought alloys
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Microstructure and mechanical properties of Mg-Zn-Mn-Sn-Nd wrought alloys
چکیده انگلیسی

The microstructure and mechanical properties of as-cast and extruded Mg-6Zn-1Mn-4Sn-xNd (x=0, 0.5, 1.0, 1.5) alloys were investigated by means of optical microscopy (OM), X-ray diffraction (XRD), scanning electron microscopy (SEM) and tensile test. The results showed that the dendrites sizes of these alloys were decreased by the addition of Nd. The phase compositions of the as-cast Mg-Zn-Mn-Sn-Nd alloys were dendritic α-Mg, MgZn2, Mg2Sn, T phase and MgSnNd ternary phase. The mechanical properties of the as-extruded alloys were improved due to the refined equiaxed grains and dispersive Mg2Sn and MgSnNd second phases. The comparison of the theoretical yield strength with the experimental yield strength revealed that the yield strength model of the as-extruded alloys should be modified as σys=σMg+σgb+σss+σsp.

The phase compositions of the s-cast Mg-Zn-Mn-Sn-Nd alloys were dendritic α-Mg, MgZn2, Mg2Sn, T phase and MgSnNd ternary phaseFigure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 32, Issue 1, January 2014, Pages 52–56
نویسندگان
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