Kim, Jeong Min Min, Guensik Shim, Jae-Hyeok Lee, Kyung Jong 2024-01-19T23:01:03Z 2024-01-19T23:01:03Z 2021-09-03 2018-05 1598-9623 https://pubs.kist.re.kr/handle/201004/121443 The effect of the time-dependent pinning pressure of precipitates on abnormal grain growth has been investigated by multiphase field simulation with a simple precipitation model. The application of constant pinning pressure is problematic because it always induces abnormal grain growth or no grain growth, which is not reasonable considering the real situation. To produce time-dependent pinning pressure, both precipitation kinetics and precipitate coarsening kinetics have been considered with two rates: slow and fast. The results show that abnormal grain growth is suppressed at the slow precipitation rate. At the slow precipitation rate, the overall grain growth caused by the low pinning pressure in the early stage indeed plays a role in preventing abnormal grain growth by reducing the mobility advantage of abnormal grains. In addition, the fast precipitate coarsening rate tends to more quickly transform abnormal grain growth into normal grain growth by inducing the active growth of grains adjacent to the abnormal grains in the early stage. Therefore, the present study demonstrates that the time dependence of the pinning pressure of precipitates is a critical factor that determines the grain growth mode. English KOREAN INST METALS MATERIALS MICROALLOYED STEELS STATIC RECRYSTALLIZATION PRECIPITATION KINETICS MODEL AUSTENITE MICROSTRUCTURE PARTICLES EVOLUTION SIZE Effect of Time-Dependent Pinning Pressure on Abnormal Grain Growth: Phase Field Simulation Article 10.1007/s12540-018-0070-2 1 METALS AND MATERIALS INTERNATIONAL, v.24, no.3, pp.549 - 559 METALS AND MATERIALS INTERNATIONAL 24 3 549 559 scie scopus kci 000431506500013 2-s2.0-85043460526 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article MICROALLOYED STEELS STATIC RECRYSTALLIZATION PRECIPITATION KINETICS MODEL AUSTENITE MICROSTRUCTURE PARTICLES EVOLUTION SIZE Abnormal grain growth Multiphase-field model Precipitate Coarsening Particle pinning