About this Engineering article

Predicting the complete tensile properties of additively manufactured Ti-6Al-4V by integrating three-dimensional microstructure statistics with a crystal plasticity model by Fatemeh Azhari; Chris Wallbrink; Zoran Sterjovski; Bruce R. Crawford; Adrian Menzel; Dylan Agius; Chun H. Wang; Graham Schaffer is a Engineering article available to read on EtoBox.

A multiscale finite element model integrating microstructure statistics with an enhanced threedimensional (3D) crystal plasticity model including damage has been developed to predict the complete tensile stress-strain response of Ti-6Al-4V manufactured by selective laser melting. A statistically equivalent representative volume element (SERVE) was constructed from an orthogonal set of electron backscatter diffraction (EBSD) images capturing key statistical information such as the spatial distribution of the grain size and the crystallographic and morphological orientation of the grains. Working from this 3D SERVE as a statistical model of the real microstructure, the crystal plasticity finite element (CP-FE) method was then used to predict the complete tensile stress-strain response of the material, including damage post necking. For the first time, crack-band theory (CBT) was incorporated into the CP-FF model to accurately predict ductility and to minimize mesh size sensitivity, which is a common issue in existing models. The effects of the 3D SERVE size on the stress-strain response was investigated through a rigorous sensitivity analysis. The model was calibrated using one sampl

Author

Fatemeh Azhari; Chris Wallbrink; Zoran Sterjovski; Bruce R. Crawford; Adrian Menzel; Dylan Agius; Chun H. Wang; Graham Schaffer

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)