Institute of Physics of Materials AS CR, v. v. i. > Projects > High-temperature damage mechanisms in Ni-based superalloy fabricated by laser powder bed fusion

High-temperature damage mechanisms in Ni-based superalloy fabricated by laser powder bed fusion

InvestigatorIng. Ivo Kuběna, Ph.D.
Number of Project23-06167S
Internal Project Number323010
AgencyGrantová agentura České republiky
Duration2023-01-01 - 2025-12-31

Anotace
Laser powder bed fusion (L-PBF) technology has emerged as a game-changer that holds great promise for producing complex component geometries with complicated internal structures that are difficult to produce with conventional technologies. The intended project will focus on Ni-based superalloy IN939 produced by L-PBF. Special attention will be paid to the effect of building direction and heat treatment (HT) on microstructure and related fatigue and creep behavior. Description of complex high-temperature degradation mechanisms operating during fatigue and creep loading of HT L-PBF IN939 will be provided using advanced microscopy techniques. A phase-field approach fully coupled with crystal plasticity micromechanics will be used to model the L-PBF IN939 response to HT as well as to fatigue and creep loading. Experimental data on fatigue and creep behavior together with intense microstructural scrutiny and numerical modeling will pave the way to an improved understanding of high-temperature degradation mechanisms of L-PBF Ni-based superalloys.


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