Regensburg 2013 – scientific programme

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SYMM: Symposium Computational Challenges in Scale-Bridging Modeling of Materials

SYMM 1: Computational Challenges in Scale-Bridging Modeling of Materials

SYMM 1.3: Invited Talk

Thursday, March 14, 2013, 10:30–11:00, H1

Crucial Issues and Future Directions of Through-Process Modeling — •Guenter Gottstein — RWTH Aachen University, Institut of Physical Metallurgy and Metal Physics, Aachen, Germany

Computer simulation of materials processing and properties has advanced to an established field and indispensible research topic in materials science and engineering during the past decade. Moreover, it has grown to a powerful and accepted tool for commercial alloy and process development. While the general theory has been laid out, physics based scale-bridging modeling approaches have been developed and are currently employed also in industrial environments, flexible interfacing has become available and automated simulation is currently being tested, there are still bottlenecks that impede the ease of application and the predictive power of these tools and urgently need to be addressed. Such needs include reliable experimental databases, the bridging of knowledge gaps on critical phenomena like nucleation, interacting microstructural evolution processes that require vastly different computation times, inverse modeling algorithms etc. Finally, despite of the remarkable advances in available computer power, computer simulation still suffers from too low computational speed to address statistically significant system sizes and to lend itself to process control. More recent concepts will be introduced, in particular in view of the changing philosophy of computer architecture and the increasing availability of massively parallel computing power, which may actually require a departure from conventional and established modeling concepts.