Secondary phase precipitation in ultrafine-grained superduplex stainless steels
نویسندگان
چکیده
Abstract. Ultrafine-grained S322750 superduplex stainless steel has been obtained through high-pressure torsion (HPT) process. Microstructural evolution after the severe plastic deformation (SPD) shown no phase transformation. Isothermal heat treatment was applied process in order to promote secondary precipitation. Precipitation enhanced ultrafine-grained comparison coarse-grained at same isothermal conditions. Mainly sigma and chromium nitrides were found as a product of local diffusion The morphology phases analyzed by using field emission scanning electron microscopy (FESEM) transmission (TEM).
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ژورنال
عنوان ژورنال: Materials research proceedings
سال: 2023
ISSN: ['2474-3941', '2474-395X']
DOI: https://doi.org/10.21741/9781644902615-25