Ridging-free Ferritic Stainless Steel Produced through Recrystallization of Lath Martensite

Abstract

Fig. 11. Roughness profiles of tensile test pieces strained by 20 % in 12Cr-1Ni steels recrystallized after cold rolling at different reductions and JIS SUH409 steel. The roughness is expressed in micrometer.

Effect of Simple Shear Deformation Prior to Cold Rolling on Texture and Ridging of 16% Cr Ferritic Stainless Steel Sheets

“…They undermine the formability of a sheet, such as deep drawing; thus eliminating the colonies could result in alleviating the ridging and enhancing formability. Alleviation of ridging has been attempted by several approaches, such as modifying the chemical composition, 6) electromagnetic stirring during continuous casting to refine grain size, 7) thermo-mechanical processing, [8][9][10][11] intermediate annealing between cold rolling, 12) and changing the strain path by a unique deformation such as spread rolling, 13) With the advent of electron-back scattering diffraction (EBSD), it has become faster and easier for researchers to measure macro-and micro-texture along with the spatial distribution of crystallographic orientation. We can thus relate more precisely the formation of ridging with the texture.…”

Improvement of Surface Ridging Resistance of an Ultra-purified Ferritic Stainless Steel by Optimizing Hot Rolling Condition

“…Some efforts have been carried out to improve the ridging resistance of FSSs. Toshihiro et al proposed that 12%Cr FSS can show little ridging tendency through the recrystallization of lath martensite [15]. But with the C/N purification and increasing Cr content higher than 17%, the FSS does not undergo austenite-to-ferrite transformation at high temperatures.…”

Role of hard martensite phase prior to cold-rolling on microstructure evolution after annealing in ferritic stainless steel

“…Tsuchiyama et al [8] reported that ridging was successfully suppressed in a ferritic stainless steel by controlling microstructure through the recrystallization of lath martensite. However, Fe-12%Cr-1%Ni (mass%) alloy was quenched from the full austenite region followed by cold-rolling and annealing.…”