Title: THE EFFECT OF AUSTENITE VOLUME FRACTION ON THE DEFORMATION RESISTANCE OF 409 STAINLESS STEELS DURING HOT-STRIP ROLLING
Abstract:The mill log data obtained from the hot-strip rolling of 409 stainless steels were analyzed in order to investigate the effect of the chemical composition on the deformation resistance. The results sh...The mill log data obtained from the hot-strip rolling of 409 stainless steels were analyzed in order to investigate the effect of the chemical composition on the deformation resistance. The results showed that the deformation resistance depended sensitively on the austenite stabilizing capability of the material chemistry, suggesting the austenite volume fraction as a dominant factor in controlling the deformation resistance. Deformation resistance ratio (DRR) was defined as a ratio of the deformation resistance of a two-phase (ferritic+austenitic) microstructure to that of a fully ferritic microstructure. The dependence of DRR on the austenite volume fraction appeared to be linear, which was also observed by the plane strain compression tests performed on the laboratory specimens with various austenite volume fractions. The implication of this result is that during the hot-strip rolling of 409 stainless steels with a two-phase microstructure, these steels are likely to deform in an equal-strain manner.Read More
Publication Year: 2009
Publication Date: 2009-03-25
Language: en
Type: article
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