Analysis of Surface Topography on Duplex Stainless Steel AISI 2205 for Deep Sea Applications

Abstract

In this investigation, analysis of surface topography on Duplex Stainless Steel (DSS) AISI 2205 was carried out under the shot peened and various machined conditions. The surface profiles of the shot peened, polished, milled, ground and as received conditions were compared in micron level. In order to study the influence of shot peening on the profile of surface roughness, DSS samples were peened using S390 shots for different durations. Severe Plastic Deformation (SPD) was observed on the surface of DSS due to peening. Also, peening has more effect on the austenite phases than the ferrite phases on DSS surface. The shot peened surface profiles obtained using S390 shots offer better topography as compared with the other machined and as received surface conditions. As a part of the study, the effect of dual shot peening was inspected by peening the surface using two shots which introduce lots of micro peaks and valleys on the surface of DSS.

Weldability, machinability and surfacing of commercial duplex stainless steel AISI2205 for marine applications – A recent review

“…Recent research in DSS 2205 with regard to shot peening offers fruitful outcomes in the real-time applications. Shot peening induces grain refinement on the surface of DSS by impacting spherical shots on it [107] . Lateral stretching and severe plastic deformation on the surface grains of DSS induced by shot peening are given in Fig.13 (a) and (b).…”