Void Coalescence and Texture Analysis of Various Indian Stainless Steel Sheets Formed Under Different Stress Conditions

摘要

Formability, an important mechanical property of the sheet metal is strongly reliant on the crystallographic texture. This paper deals with the perspective of crystallographic texture, void coalescence and its relevance with the formability of different Indian stainless steel grades, namely, SS301, SS304, SS430, SS409M, and low nickel austenitic grade stainless steel(SSLNl). Forming limit diagrams were determined and plotted experimentally. Further their bulk X-ray crystallographic textures and their ODF plots were analyzed. The forming limit diagrams of different Indian stainless steel grades were examined with respect to the crystallographic texture point of view. The forming limit diagrams and crystallographic textures were then correlated with normal anisotropy of the sheet metal and it is further correlated with the void coalescence parameters. It is observed that the formability of SSLN1 is comparable with SS304.