Institute of Physics of Materials AS CR, v. v. i. > Projects > Microstructural manipulation of austenitic steels by laser powder bed fusion technique

Microstructural manipulation of austenitic steels by laser powder bed fusion technique

InvestigatorIng. Miroslav Šmíd, Ph.D.
Number of Project23-07235S
Internal Project Number323030
AgencyGrantová agentura České republiky
Duration2023-01-01 - 2025-12-31

Anotace
The project aims to explore the concept of local microstructure design by additive manufacturing, namely by the laser powder bed fusion (LPBF) technique. The team will utilize the LPBF process variability to exploit the microstructure manipulation in terms of chemical composition and lattice orientation to control mechanical properties. Two features of the LPBF process will be employed – i) the controllable local thermal gradients and ii) the evaporation of manganese during the interaction of molten metal with a high energy laser beam. Thus, the project will focus on high manganese austenitic steels with a chance to switch work-hardening mechanisms from twinning-induced to phase transformation-induced plasticity. The main accent will be given to characterize the mechanical properties of a material containing various substructures with different mechanical properties under monotonic and cyclic loading. The project results can deliver vast options for the material design with locally altered mechanical properties to enhance fatigue resistance or deformation tolerance.


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