Dear Colleagues,

Semi-solid metal processing (SSM) is an unconventional method of material forming where the processing temperature exceeds the solidus curve, and where the material is partially melted. Although this method leads to problems during processing, at the same time, SSM makes it possible to produce complicated shapes, even from difficult to form materials. This technology can also be used to remove, for example, high-temperature sharp edged carbides or other particles appearing in the structure before processing that have negative effects on the material's mechanical properties. High processing temperature also allows for a homogeneous distribution of the alloying elements. The structure after SSM of high-alloyed steels consists of polyhedral austenite grains and ledeburitic mesh. As this type of microstructure has deteriorated toughness, new methods to change these microstructures must be developed. Some of the possibilities include the connection of semi-solid processing with intensive plastic deformation, heat treatment, and cryogenic treatment, or their combinations. SSM has the potential to be not only a material forming technology, but also a process for obtain promising materials with interesting properties with, for example, higher toughness and wear-resistance.

This Special Issue is focused on research in the area of semi-solid processing of metals and on methods such as intensive deformation, heat treatment, and others to find new approaches and advantages for this exciting technology.

Dr. Hana Jirková
Guest Editor

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• semi-solid processing
• metals
• steels
• wear resistance
• heat treatment
• cryogenic treatment
• primary carbides