Evolution of interface character distribution in duplex stainless steel processed by cross-rolling and annealing. Issue 11 (November 2018)

• Record Type: Journal Article
• Authors: Wang, Ming; Xu, Ting; Zhu, Yanli; Yin, Wenhong; Guo, Hong; Zhao, Ertuan; Fang, Xiaoying; Wang, Weiguo
• Is Part Of: Journal of materials science & technology. Volume 34:Issue 11(2018)
• Page Start: 2160
• Page End: 2166
• Publication Date: 2018-11
• Subjects: Intervariant boundary plane -- Phase boundary -- Duplex stainless steel -- Five-parameter analysis; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2018.02.018
• Languages: English
• ISSNs: 1005-0302

Abstract

Abstract: Duplex stainless steel UNS S31803 samples were cross-rolled with a true strain of ε = 2 followed by annealing at 1323 K for 2 min and 240 min, respectively. The distributions of intervariant boundary planes in the precipitated austenite (A) from ferrite (F) and phase boundary planes conforming to Kurdjumov-Sache (K-S) orientation relationship (OR) were characterized by electron backscatter diffraction (EBSD) and the five-parameter analysis (FPA) method, respectively. The intervariant boundary planes with misorientation angle of 60° around <111> and <011> occur frequently and tend to terminate on the {111} plane. At the grain size level of 4 μm, the phase boundary appears to be connected with the K-S OR terminating on {110}F ‖{111}A at the early stage of annealing. When the grain size reaches approximately 20 μm, phase boundary was modified into {541}F ‖{533}A due to twinning in austenite during annealing.