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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 alloy design and structural integrity under extreme condition.