METHOD OF PROCESSING TREATMENT OF AUSTENITIC HEAT-RESISTANT STAINLESS STEEL CONTAINING ALUMINIUM OXIDE SCALE AND AUSTENITIC HEAT-RESISTANT STAINLESS STEEL THE SAME

摘要

The present invention relates to a method of manufacturing an austenitic stainless steel including an alumina oxide layer and to an austenitic stainless steel therefrom, and in detail, by forming an alumina oxide layer on the surface of the austenitic stainless steel, a conventional chromium oxide film (Cr ₂ O ₃ ) It has a higher oxidation stability, and a large amount of fine NbC (niobium carbide) is precipitated in a high fraction during high temperature use due to the history of cold working (inducing potential generation) with a processing amount of 3 to 10% to improve creep life. The present invention relates to a method for producing an austenitic stainless steel including an alumina oxide layer, and an austenitic stainless steel thereby.