Prediction of Tensile Behaviour of Ferrite-Martensite Dual Phase Steel using Real Microstructure-based RVE Simulations

Prediction of macroscopic behaviour from the microstructural parameters helps in optimisation of process parameters for the development of advanced high strength steel. In the present work, representative volume element (RVE) models with size varying from 20 x 20 mu m(2) to 100 x 100 mu m(2) have been generated from optical microscopic images and Finite Element simulations are being performed to predict the flow behaviour of ferrite-martensite (FM) dual phase steel. A considerable change in simulated stress-strain curve is observed with variation in the RVE size. For FM dual phase steel, the optimum RVE size of 80 x 80 mu m(2) predicts the experimental stress-strain curve more accurately. (C) 2018 Elsevier Ltd. All rights reserved.