Heat Treatment of Reactor Vessel Steel AISI 321

Co-authors MARTÍNEK Petr, NACHÁZEL Jan, BALCAR Martin

Article deals with the heat treatment of AISI 321 (08CH18N10T) steel used in reactor vessels. This steel is austenitic stainless steel. Experiment is focused on influence of heat treatment a thermomechanical processing on the microstructure and especially on the morphology and distribution of titanium carbo/nitrides. Three experimental heats with various amounts of carbon, titanium and boron were prepared and subjected to different heat treatment regimes. Also different solution annealing after forging was applied. Microstructure of the samples was analysed by means of optical and scanning electron microscopy with EDS. Numerical simulation in DEFORM 3D software was used for simulation of cooling after forging.