کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1628466 1006087 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Formation of Edge Crack in 1.4% Si Non-oriented Electrical Steel during Hot Rolling
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Formation of Edge Crack in 1.4% Si Non-oriented Electrical Steel during Hot Rolling
چکیده انگلیسی

Microstructure evolution, dynamic recrystallization, high temperature oxidation and hot ductility of 1.4% Si non-oriented electrical steel sheets were investigated to reduce edge cracking. The causes of cracking were found to be coarse as-cast microstructure, grain boundary oxidation in reheating furnace, lack of dynamic recrystallization during hot rolling and increase of temperature, resulting in reduced hot ductility in strip edge region. Countermeasures against the edge crack are proposed accordingly. Lowering reheating temperature and reducing holding time reduced oxidation and decarburization. Hot charging temperature was increased to decrease reheating temperature. And using an edger can refine microstructure in strip edge region. Finally, edge heater can be added to increase edge region formability by inducing dynamic recrystallization and ductility by increasing temperature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Iron and Steel Research, International - Volume 21, Issue 2, February 2014, Pages 269-274