Integrated Computational Materials Engineering Development of Advanced Steel for Lightweight Vehicles
Advanced steel alloys with strength and ductility that surpass current generation steels employed in the automotive industry offer a promising route for improving vehicle fuel-efficiency through weight reduction. The United States Automotive Materials Partnership, LLC (USAMP) has implemented a DOE-funded integrated computational materials engineering (ICME) program for designing these third-generation advanced high-strength steels (3GAHHS) for automotive applications. The objective of the project is to integrate atomistic, microstructural, forming, joining, and performance models to create an ICME framework for 3GAHHS design. The University of Illinois' role in the project is performing atomic-scale density-functional theory (DFT) calculations to quantify the role of solutes on structural parameters, elastic constants, strengthening mechanisms, and martensitic phase transformations in steels. The resulting first-principles data serves as input to higher length-scale phase field and crystal plasticity models for predicting martensite formation with plastic strain, flow curves, yield criteria, and stress-strain curves.
last modified Nov 02, 2015 08:27 AM