ROUGHNESS OF AUSTENITIC STAINLESS STEEL DEPENDING ON MICROALLOYING ELEMENTS AND NONMETALLIC INCLUSIONS

<p>The demand for stainless steels has been steadily increasing across industries such as automotive,<br />aerospace, aviation, medical technology, and household appliances, primarily due to their excellent<br />corrosion resistance, low thermal conductivity, and favorable strength-to-weight ratio. Many of<br />these applications involve components with complex geometries and strict dimensional<br />tolerances, making machinability a crucial factor.<br />Technical surfaces are not ideally smooth geometric surfaces separating two media, but are, from<br />a microscopic point of view, rough surfaces characterized by a series of irregularities of different<br />sizes, shapes, and arrangements. The roughness represents the microgeometric irregularities of the<br />surface, i.e., unevenness at the small reference length (l) of a given direction of the surface.<br />According to the available literature, the effect of alloying elements on roughness during<br />conventional turning has not been sufficiently investigated. Therefore, the objective of this study<br />is to investigate and quantify the effect of alloying elements and nonmetallic inclusions on<br />roughness magnitudes in the longitudinal turning process of X8CrNiS18-9 stainless steel.</p>