Comparison of three-dimensional morphologies of abnormally growing grains between Monte Carlo simulations and experiments of Fe-3% Si steel

• Published in: Materials characterization Vol. 144; pp. 239 - 246
• Main Authors: Na, Tae-Wook, Cho, Da-Hee, Park, Chang-Soo, Park, Jong-Tae, Han, Heung Nam, Hwang, Nong-Moon
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.10.2018
• Subjects: Abnormal grain growth; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; DISTRIBUTION; Fe-3%Si steel; GRAIN BOUNDARIES; GRAIN GROWTH; MATERIALS SCIENCE; MONTE CARLO METHOD; Monte-Carlo simulation; PRECIPITATION; Serial sectioning; SHAPE; SOLIDS; STEELS; Sub-boundary enhanced solid-state wetting; THREE-DIMENSIONAL CALCULATIONS; Three-dimensional morphology; Abnormal grain growth; Fe-3%Si steel; Serial sectioning; Three-dimensional morphology; Monte-Carlo simulation; Sub-boundary enhanced solid-state wetting
• ISSN: 1044-5803; 1873-4189
• DOI: 10.1016/j.matchar.2018.07.017

Three-dimensional (3-D) Monte Carlo simulations of grain growth with sub-boundaries in the presence of precipitates were performed based on the distribution of realistic grain boundary energy data. The simulated grains with sub-boundaries grew abnormally. The simulated and experimental morphologies of the abnormally growing grains in Fe-3%Si steel were compared. The experimental 3-D morphology was reconstructed from serially sectioned images. Both the simulated and experimental 3-D morphologies of abnormally growing grains have highly irregular and complicated shapes whereas both the simulated and experimental 3-D morphologies of normally growing grains have relatively regular and simple shapes. Growth by wetting is responsible for the highly irregular shape of the experimental abnormally growing grains of Fe-3%Si steel as well as for the highly irregular shape of the simulated abnormally growing grains. •Grains with sub-boundaries grew abnormally in the MC simulation with realistic grain boundary energy.•The experimental 3-D morphology of Goss grain was reconstructed from serially sectioned images.•2-D sectioned microstructures of the MC simulation and experiment have highly irregular shape.•Both simulated and experimental 3-D morphologies of AGG have similar complicated shapes.