It's time for this autumn's first tandem seminar held by Chalmers Area of Advance Materials Science.
When: 17 september 2021, at noon (12 am). Place: Online.
We will have two presentations dedicated to high entropy alloys, or compositionally complex alloys. We will cover the research frontier topic in the metallic materials community from two complementary aspects, one from experimental aspect focusing more on alloy development and structural/functional properties, and one from theoretical aspect addressing to functionality by design.
The webinar is held on the platform zoom. To login and participate, click on the following link:
- Noon, at 12:00. The webinar starts. Moderator: Professor Leif Asp, Co-Director Area of Advance Materials Science
- Alloyed pleasure: high entropy alloys, Professor Sheng Guo, Department of Industrial and Materials Science at Chalmers.
- Quantum-mechanics maps high entropy alloys, Professor Levente Vitos, Computational Material Design and head of Applied Materials Physics group at the Department of Materials Science and Engineering KTH.
Alloyed pleasure: high entropy alloys
Since about 17 years ago, there has been a new trend in designing alloys in the physical metallurgy community, which differs significantly to previous practices. In the new category of alloys, high-entropy alloys (HEAs), there is no longer a clear distinction of dominant alloying element and other elements, and basically all alloying elements are mixed close to equiatomically. This novel alloy design strategy opens up a vast unexplored compositional space, and potentially new opportunities to numerous new materials and new applications, but also brings new challenges on how to design these alloys properly.
Sheng Guo is a Professor in the Department of Industrial and Materials Science at Chalmers. His main research areas are alloy design and mechanical behavior of high entropy alloys, aiming for high-temperature applications.
Quantum-mechanics maps high entropy alloys
Thanks to impressive developments within Density Functional Theory (DFT) based methods, DFT solvers and computational power during the last few decades, modern materials research receives increasing support from first-principles modeling. Such approach gives fundamental understanding, offers efficient pre-screening against various degrees of freedom and provides information where experimental assessments are not feasible. Today the ab initio theory aided materials assay finds its way in almost all areas of advanced materials design and characterization. Due to the complexity of the problem, however, DFT modeling was practically missing within the exciting field of High Entropy Alloys (HEAs) for almost one decade after their discovery. Starting from early 2010s, we made a series of pioneering efforts to fill this gap and extend the scope of ab initio modeling to HEAs.
Levente Vitos is Professor in Computational Material Design and head of Applied Materials Physics group at the Department of Materials Science and Engineering KTH. His main research areas are Density Functional Theory methods, modern computational alloy theory and materials modeling from first-principles theory.
Seminarium; Öppen föreläsning