سال انتشار: ۱۳۹۱

محل انتشار: اولین همایش بین المللی و ششمین همایش مشترک انجمن مهندسی متالورژی ایران

تعداد صفحات: ۱۲

نویسنده(ها):

Hamidreza Jafarian – School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST),
Ehsan Borhani – Department of Nano technology, Nano-Materials Science and Engineering group, Semnan University,

چکیده:

In this paper, microstructure and mechanical properties of austenite in Fe-24Ni-0.3C alloy subjected to accumulative roll bonding (ARB) process and subsequent annealing were studied. After 6 cycles of ARB process, elongated ultrafine-grained (UFG) austenite with mean grain size of 300 nm was obtained. Annealing treatment of 6-cycle ARB processed austenite at temperatures from 773 to 873 K resulted in formation of partly and fully recrystallized austenites with mean grain sizes between 750 nm to 2.5 μm.