کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7970153 1514380 2015 27 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal stability of bimodal microstructure in magnesium alloy AZ91 processed by ECAP
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Thermal stability of bimodal microstructure in magnesium alloy AZ91 processed by ECAP
چکیده انگلیسی
The changes in microstructure of equal channel angular pressing (ECAP) processed magnesium alloy AZ91 during thermal exposure were studied in this paper. The microstructure stability was investigated by means of electron backscatter diffraction (EBSD), which allowed to measure the changes in grain size, mutual ratio of low-angle boundaries (LABs) to high-angle ones (HABs) and local lattice distortion evaluated by the kernel average misorientation (KAM) parameter. It was found experimentally that the threshold temperature at which significant grain coarsening takes place is 350 °C. No modification to mean grain diameter occurs below this temperature, nonetheless, some changes in LAB and HAB fraction, as well as in local lattice distortion, can be observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 107, September 2015, Pages 167-173
نویسندگان
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