Influence of Initial Microstructure on Hot Deformation Behavior of Duplex Stainless Steels
2012
Received 1 Sep 2012 Accepted 25 jan 2013 Available online 20 January 2013 In this research the effect of initial microstructure on hot deformation behavior in terms of Ferrite-to-Austenite ratios is studied. Two types of stainless steels C1 and C2 were homogenizing heat-treated and deformed under hot compression examinations at temperatures 900oC and 1100oC at strain rate of 0.1s. The results showed that the flow stress levels of specimens are strongly related to deformation parameters and initial microstructures of steels. Moreover, during cooling from 1350oC to the deformation temperature, flow stress level increased for both samples because of increment in austenite content.
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