Scientific Events

Room: BDS Seminar room

Application of Scientific Principles to Aluminium Automotive Sheet

Abstract Aluminium has been used in the manufacture of automobiles for more than 100 years and current usage averages more than 150kg per vehicle. Recent demands for higher fuel economy, improved vehicle performance, and lower CO2 emissions are currently driving a dramatic increase in the usage of specially designed aluminium alloys in the automotive industry. Aluminium flat-rolled sheet products are currently seeing wide-spread application for many components previously produced from steel. The technical requirements for aluminium sheet include high levels of formability, high strength, corrosion resistance, surface appearance, and long term reliability of joints. While these requirements are often in direct conflict, improved understanding of microstructure and surface has enabled the economical production of sheet that can meet the necessary customer demands. Three key developments in metallurgy and surface science that have made aluminium automotive sheet possible are reviewed: control of precipitate morphology for high strength, surface microstructure for bond durability, and crystallographic texture for surface appearance after forming. [more]

Diffusion and segregation of solutes in grain boundaries: from pure metals to high-entropy alloys

Diffusion and segregation of solutes in grain boundaries: from pure metals to high-entropy alloys
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Nitride coatings based on high-entropy alloys

Nitride coatings based on high-entropy alloys
The new alloying concept, known as high-entropy alloys (HEAs) or multi-principal elements alloys (MPEAs) are a new emerging class of perspective materials that possess a wide range of unique properties. Since the appearance of the first studies of HEAs, more than 1000 scientific works were published. It was investigated relationship between microstructure of new alloys, which can include SS (with BCC, FCC and HCP structures), IM and even amorphous state and their physical properties. It was shown that the HEAs possess different outstanding functional properties, like superconductivity with transition temperature Tc = 7.3 K, high level electrical resistivity, high saturated magnetization, high corrosion resistance, good hydrogen storage properties, as a template for graphene production. For achievement superior mechanical behavior and thermal stability it was designed and produced protective coatings based on HEAs. However, the research of nitride coatings based on HEA are still very limited. Clearly, the understanding of features of microstructure such non-homogeneous complex systems is essential in order to move in the improvement of the physical properties of high-entropy thin films with different intrinsic architecture. [more]

Symposium “Environmental, in-situ and time-resolved microscopy” at MC 2017 (Microscopy Conference 2017)

Symposium “Environmental, in-situ and time-resolved microscopy” at MC 2017 (Microscopy Conference 2017)
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