An investigation on full annealing temperature and annealing twins’ Density in Fe-۳۳Mn-۳Si-۲Al high-manganese steel
- سال انتشار: 1392
- محل انتشار: فصلنامه مواد پیشرفته و فرآوری، دوره: 1، شماره: 1
- کد COI اختصاصی: JR_JMATPR-1-1_001
- زبان مقاله: انگلیسی
- تعداد مشاهده: 78
نویسندگان
Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Isfahan, Iran
Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran
Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran
Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran
چکیده
Twinning induced plasticity (TWIP) steels with high manganese percentage (۱۷-۳۵%), are mostly used in automotive bodies. Their microstructure at room temperature is austenitic, and due to the low stacking fault energy, major deformation mechanism in them is twinning inside austenite grains which leads to enhanced mechanical strength in the steel. Due to the important effect of heat treatment process on mechanical properties, full annealing heat treatment and resultant twins were investigated in this study. To this aim, the steel was casted, hot rolled, and then heat treated at different times and temperatures and the obtained microstructures were analyzed using optical microscope. The results showed that the percentage of annealing twins is increased with increasing annealing temperature up to ۱۱۰۰ °C, the peak point at which grain growth stage starts, and increasing temperature above that decreases twins’ percentage. A relation between grain size and annealing twins’ percentage was found. Full annealing temperature for this steel was determined to be ۱۱۰۰ °C.کلیدواژه ها
Grain Size, TWIP Steel, Heat treatment, Annealing Twins Densityاطلاعات بیشتر در مورد COI
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