B-18 EFFECT OF SURFACE ROUGHNESS, POWDER SIZE AND PRESSURE ON SUPERPLASTIC BORONIZING OF DUPLEX STAINLESS STEEL(Session: Surface Modification)

抄録

In this work, a further study on boronizing using compression method called superplastic boronizing (SPB) was conducted. Two types of duplex stainless steel (DSS) with different microstructure were boronized-the as-received and the superplastic fine grain DSS. The effect of surface roughness and powder particle size were studied. The microstructure, hardness, and layer thickness of the boronized materials were investigated depending on time, temperature and pressure. The results were then compared with the conventional boronizing (CB). The overall results from the study show that the compression method can significantly improve the surface properties of DSS as compared to the CB.