کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1448559 988677 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Relationship between deformation twinning and surface step formation in AZ31 magnesium alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Relationship between deformation twinning and surface step formation in AZ31 magnesium alloys
چکیده انگلیسی

Rolled sheets of AZ31 Mg alloys were deformed at room temperature under tension along the rolling direction. A number of large surface steps were observed in the region near the fractured edge. Transmission electron microscopy showed the presence of twins under these steps. Crystallographic analysis indicated that the twins are of the {101¯1}–{101¯2} double twin type with their basal planes tilted by 37° with respect to the basal planes of the matrix, which is considered to make basal dislocation slip highly active within the twin. The localized deformation within the twins may lead to the formation of crack-like faults and to failure in a macroscopically brittle manner.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 58, Issue 13, August 2010, Pages 4316–4324
نویسندگان
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