Fabrication of nanocrystalline austenitic stainless steel with superior strength and ductility via binder assisted extrusion method

Biomedical austenitic stainless steel (ASTM F2581) has been processed by the powder metallurgy technology using binder assisted extrusion method and aside a sintering aid. The resultant microstructure was examined optical microscopy, field emission scanning electron transmission microscopy x-ray diffraction methods. images indicate that aid considerably decreases porosities of sintered samples. reveal alloy consists austenite in nanocrystalline form amorphous phases. mechanical properties were measured through compressive tests. mean yield strength is estimated at about 824 MPa, exceeds 1GPa, which superior to produced conventional Furthermore, process followed here compatible with large scale industrial production reasonable cost.