On power-law type relationships and the Ludwigson explanation for the stress-strain behaviour of AISI 316 stainless steel

• DOI: 10.1007/s10853-005-1078-9
• Publication Date: 2005-08-24T13:50:24Z
• Authors: K. G. Samuel; P. Rodriguez
• Keywords: 0103 physical sciences; 01 natural sciences

The influence of prior cold work on the stress strain behavior of a type 316 stainless steel is investigated at 300 K. The Ludwigson relation and the often cited explanation for the Ludwigson type stress strain behavior found in stainless steels to a changeover from planar slip to cross slip is reexamined. It appears that the Ludwigson type behavior is more a consequence of a structure sensitive “hardness state” of the material. This “hardness state” is expressed in terms of an equivalent plastic strain ɛ0. The Swift equation that essentially incorporate such a correction term for strain and describes well, the stress strain curve and the work hardening in a type 316 stainless steel.