Phase-Field Simulation on Phase Transformation during Creep Deformation in Type 304 Steel

Abstract:

Phase-field simulation of phase transformation during creep in Type 304 austenitic steel is performed and simultaneous nucleation and growth of both M23C6 carbide and ferromagnetic α phases are reproduced. Nucleation events of these product phases are explicitly introduced through a probabilistic Poisson seeding process based on the classical nucleation theory. Creep dislocation energy near the carbide is integrated into the nucleation driving force for the α phase. We examine the effect of the dislocation density on precipitation of the α phase, and it is found that a small difference in the dislocation density leads to a significant change in precipitation behavior of the α phase.

• Periodical: Materials Science Forum (Volumes 654-656)
• Pages: 492-495
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.654-656.492
• Online since: June 2010
• Authors: Yuhki Tsukada, Atsuhiro Shiraki, Yoshinori Murata, Shigeru Takaya, Toshiyuki Koyama, Masahiko Morinaga
• Keywords: Austenite, Creep, Ferromagnetic, Nucleation, Phase Field Modellig

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