|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Mechanical Characteristics and Application Properties of Metals and Non-metals for Technology: An EPD Symposium in Honor of Donato Firrao
||Effect of Initial As-cast Structure on the Evolution of Microstructure and Texture and Finally Ridging Behavior of Ferritic Stainless Steel
||Pranabananda Modak, Sudipta Patra, Rahul Mitra, Debalay Chakrabarti
|On-Site Speaker (Planned)
Ferritic stainless steel is extensively used in automotive exhaust system on account of its high oxidation resistance, high temperature strength and superior deep drawability. But the steel suffers from surface defect called ‘Ridging’, which appears after deep drawing or forming due to the differential deformation behavior of different texture components. Pieces of slabs from columnar, equiaxed and mixed were taken for study through different processing route. They were characterized by optical microscopy and EBSD techniques. Coarse grain band generated from the columnar grains are very hard to recrystallize and break down. Recrystallization is very difficult to achieve after hot rolling and comparatively easy after cold rolling of columnar grain. Either a large amount of equiaxed zone in the initial cast structure or annealing after hot rolling is necessary to break down the non-uniformity in the grain as well as texture arise from columnar grain and thus ridging can be minimized.
||Planned: Supplemental Proceedings volume