|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced High-strength Steels
||Enhanced Formability of Duplex Light-weight Steels by Warm-rolling
||Yongmoon Lee, Chong Soo Lee
|On-Site Speaker (Planned)
Light-weight steels based on Fe-Mn-Al-C system receive a great attention in the automotive industry due to the advantage of fuel efficiency of the vehicle. Al is an element that effectively reduces the density, but a large amount of Al addition deteriorates formability owing to the formation of coarsened delta ferrite band structure. In this study, duplex lightweight steels (Fe-(9~12)Mn-(6~8)Al-0.3C) were warm-rolled at temperatures of 773-973 K. and then, tested for formability. Electron back scattered diffraction (EBSD) was utilized for analyzing orientation distribution function (ODF) of ferrite and neighboring orientation relationship. Our results showed that the planar anisotropy was greatly alleviated by warm-rolling, which effectively reduced edge cracks in the cold-rolled sheets.
||Planned: Supplemental Proceedings volume