Abstract
The roughness of a milled surface is investigated for AISI 321 austenitic stainless steel with different structure and mechanical properties. The grain size is modified by familiar methods of intense plastic deformation: ABC pressing and rolling. For milling, stainless-steel plates of different thickness are prepared. Cylindrical hard-alloy mills are employed. Analysis of the microgeometry of the machined surface indicates that change in structure and mechanical properties by intense plastic deformation decreases the height parameters Sa and Sz of the roughness by factors of 1.8–6.7.
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