Review of passivity and electrochemical properties of nanostructured stainless steels obtained by surface mechanical attrition treatment (SMAT): trend and progress

Abstract Surface nanocrystallization provides the opportunity to produce gradient-structured metallic materials with improved properties. Several attempts have been made nanostructured stainless steel (SS), along study of resultant corrosion resistance. However, current knowledge is insufficient address mechanism and possible ways enhancing resistance after surface treatment. The present work reviews past significant works on effect treatment by mechanical attrition (SMAT) method as well its processing parameters properties SS. SS influenced extent grain refinement, compactness, homogeneity passive film, Cr content, boundary structure, composition, alloying elements. In addition, resulting can be controlled choosing right during Progress behavior steels was summarized new avenues for further research developments are proposed.