Interpretation and meso-scale modeling of crystal lattice rotation due to plastic deformation of polycrystalline metals

2016 Fiscal Year Final Research Report

• Project/Area Number: 26820012
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Materials/Mechanics of materials
• Research Institution: Saga University
• Principal Investigator: Tadano Yuichi 佐賀大学, 工学(系)研究科(研究院), 准教授 (00346818)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 結晶塑性 / 格子回転 / 多結晶金属 / 材料モデリング

Outline of Final Research Achievements

A numerical investigation of the crystal lattice rotation in metallic metals was carried out using the polycrystalline plasticity framework. A systematical evaluation to determine the reasonable representative volume element was conducted, and the adequate grain shape and size were decided. Finite element models of polycrystalline FCC metal were generated based on the experimental study, and crystal plasticity analyses were carried out. The obtained results suggest that lattice rotation may occur along different directions with respect to each material point in a crystal grain, which is consistent with the experimental observations. These results may lead a more precise material model in the crystal plasticity framework.

Free Research Field

計算固体力学