کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7978760 | 1514717 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of Sn addition on the microstructure and mechanical properties of extruded Mg-8Al-2Zn alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effect of adding Sn to an extruded Mg-8Al-2Zn (AZ82 alloy) was investigated by analyzing its microstructural characteristics before and after extrusion, and by conducting tensile and compressive tests with 2, 4, and 6Â wt% Sn addition. This revealed that although second phases formed during solidification are nearly fully dissolved by homogenization treatment in AZ82 alloy with 2Â wt% Sn, numerous Mg2Sn particles remain in AZ82 alloys with 4 and 6Â wt% Sn due to this concentration being over the solubility limit. All of the extruded alloys were found to have a fully recrystallized structure, yet the addition of 6Â wt% Sn created a considerable quantity of large, banded Mg2Sn particles oriented along the extrusion direction. The tensile and compressive yield strength gradually increased with Sn content mainly due to a decrease in the size of recrystallized grains and an increased amount of fine Mg2Sn precipitates, though this came at the expense of a decrease in elongation. It was also found that the ultimate tensile strength improves with Sn addition of up to 4Â wt%, but deteriorates beyond that point due to premature fracture caused by crack initiation at large particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 626, 25 February 2015, Pages 128-135
Journal: Materials Science and Engineering: A - Volume 626, 25 February 2015, Pages 128-135
نویسندگان
Sung Hyuk Park, Jae-Gil Jung, Jonghun Yoon, Bong Sun You,