Mechanism-based constitutive modelling in Crystal Plasticity

Assoc. Prof. Wei Wen, Lancaster University, Uk

10:00-11:30, August 18, 2023

Yiucheng Lecture Hall (500), Xu Zuyao Building

Biography

Wei Wen, Associate Professor at Lancaster University, UK, is a leading expert in the field of crystal plasticity of advanced alloy materials. He graduated from the University of Strasbourg in France. He was a postdoctoral student at Los Alamos National Laboratory. During this period, he was responsible for large research projects funded by the US Department of Energy. He has made significant contributions to the progress of the project and received commendations. For many years, Professor Wei Wen has been dedicated to analyzing the influence of alloy composition and process on properties through multi-scale simulation, and guiding new alloy design and process optimization. Research interests include additive manufacturing, materials for nuclear fusion reactors, carbon/metal nanocomposites, high temperature creep, data-driven algorithms, and structural reliability analysis. He has published 23 papers in top international journals for materials such as Internaltional Journal of Plasticity and Acta Materialia.

Abstract

Constitutive modelling plays a key role in modern engineering. Recent advances in Crystal Plasticity allow us to link directly the outcomes of lower length scale simulations and microstructure characterization with the mechanical properties of metallic materials. As a result, the extrapolation of material behaviour from the processing and service history becomes possible.

In this talk, I will briefly summarize the development in Crystal plasticity modelling. Using my recent research as an example, the role of mechanism-based constitutive models playing in this field will be introduced. The perspective will also be presented with its potential applications in structural integrity analysis under extreme condition and processing optimization for additive manufacturing techniques.