Development of microstructure optimization method for improving properties of high strength steels

2016 Fiscal Year Final Research Report

• Project/Area Number: 25709002
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Materials/Mechanics of materials
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: Yamanaka Akinori 東京農工大学, 工学(系)研究科(研究院), 准教授 (50542198)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: フェーズフィールド法 / 結晶塑性有限要素法 / 均質化法 / 数値材料試験 / ミクロ組織

Outline of Final Research Achievements

Recently, development of lightweight and high-strength steel by controlling its underlying microstructures is desired. In particular, in order to develop new high strength steels efficiently, numerical simulation techniques based on computational materials science which enables us to predict the mechanical properties of the steels from their microstructure have been actively studied. In this study, we have developed the numerical simulation methods to predict the microstructure evolutions in steels and aluminum alloys by the multi-phase-field method, and to evaluate the morphology of the predicted microstructures. Furthermore, the numerical material test and the sheet metal forming simulation techniques based on the crystal plasticity finite element method were established. We have discussed the possibility of numerical microstructure optimization for improving the mechanical properties and formability of steels and aluminum alloys by combining above-mentioned simulation methods.

Free Research Field

機械工学、計算固体力学、計算材料科学