Research on TMCP technology for the manufacture of SUS 304 L austenitic stainless steel plates

Two thermo-mechanical controlled processes(TMCP)including controlled rolling and accelerated cooling are proposed for the production of heavy gauge SUS 304 L austenitic stainless steel plates with different strengths and other characteristics.Based on the recrystallization mechanism and carbide precipitation behavior of SUS 304 L austenitic stainless steel,TMCP provides a powerful means to control the microstructure and precipitation of the hot rolled steel plate by the controlled rolling and accelerated cooling process.The dislocation density and grain size are the main factors in determining the strength of the stainless steel plates.Therefore,it is necessary to strictly control the hot rolling parameters,including parameters such as the finish hot rolling temperature in the recrystallization temperature region and the total reduction in the non-recrystallization region.Furthermore,in order to avoid carbide precipitation and guarantee the intergranular corrosion resistance of TMCP SUS 304 L austenitic stainless steel,a critical cooling rate after rolling is determined.