Development of Dynamic Recrystallization Multiscale Model for Microstructure Development and Macroscopic Mechanical Behavior

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630011
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Materials/Mechanics of materials
• Research Institution: Kyoto Institute of Technology
• Principal Investigator: TAKAKI Tomohiro 京都工芸繊維大学, 工芸科学研究科, 准教授 (50294260)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: フェーズフィールド法 / マルチスケールモデル / 動的再結晶 / 熱間加工 / 有限要素法

Outline of Final Research Achievements

A new hot-working multiscale model, which can simulate the microstructure evolutions and the macroscopic mechanical behaviors simultaneously, has been developed. This model is called the multi-phase-field and finite element dynamic recrystallization (MPFFE-DRX) model, where the microstructure evolutions are simulated by the multi-phase-field method and the macroscopic mechanical behaviors are computed by the conventional finite element method for the elastic-plastic large deformation problem. By performing the nonuniform compression simulations of a cylinder, an availability and validity of the developed MPFFE-DRX model have been investigated. In addition, we started the study to develop more accurate dynamic recrystallization model by coupling the crystal plasticity finite element method and multi-phase-field model.

Free Research Field

計算力学，材料力学，材料組織学