ICAMS / Interdisciplinary Centre for Advanced Materials Simulation

Events

Prediction of large deformations in FCC Metals using crystal platicity phase-field method

Date: 25.06.2018
Place: 10 Years ICAMS - International Symposium, Ruhr-Universität Bochum, Germany

Waseem Amin
Napat Vajragupta
Alexander Hartmaier

Understanding the large deformations stemming from micromechanical level in metals can really help to predict the mechanical response under certain set of loading conditions. This eventually leads to more qualitative and efficient material design and production. In this work two very efficient numerical methods namely Phase field (best for analyzing evolution of microstructure) and Crystal Plasticity (which describes the deformation mechanics very effectively) have been combined to take advantage of computational capabilities of both methods. Hence observation of thermomechanical response of FCC metals based on evolving microstructure is made possible. Kock-Mecking's and Nye's tensor have been taken into account to describe the evolution of statistically stored and geometrically necessary density which drives the plastic deformation of metals. Stress-strain flow curves have been generated to analyze Hall-Petch relation and effect of different parameters on deformation behavior.

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