کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1573203 1514672 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of asymmetric hot rolling on through-thickness microstructure gradient of Fe-20Mn-4Al-0.3C non-magnetic steel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Influence of asymmetric hot rolling on through-thickness microstructure gradient of Fe-20Mn-4Al-0.3C non-magnetic steel
چکیده انگلیسی
Through-thickness microstructure gradient as a function of asymmetric hot rolling (ASHR) process parameters was investigated for a high manganese non-magnetic steel. Shear strain distribution was calculated using a two-dimensional finite element method. According to the simulation results, the surface layer of ASHR plate undergoes the highest total shear deformation which leads to the formation of a fine-grained surface layer under conditions of large rolling reduction and relatively high temperature. In the central layer is still the partially recrystallized microstructure. With velocity ratio increasing, the depth of fine-grained surface layer approaches 1/4 plate thickness, while the recrystallization proportion for the central layer is also enhanced due to the reinforced extra shear deformation. By appropriate parameter optimization, the austenitic grain size is finally refined to ~5 µm for the surface layer and ~9 µm for the center, such that the tensile property is improved.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 671, 1 August 2016, Pages 190-197
نویسندگان
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