Institute of Physics of Materials AS CR, v. v. i. > Projects > Effect of the microstructure on the fatigue in highly anisotropic stainless steel fabricated by selective laser melting
Effect of the microstructure on the fatigue in highly anisotropic stainless steel fabricated by selective laser melting
| Investigator | Ing. Miroslav Šmíd, Ph.D. |
| Number of Project | 19-25591Y |
| Internal Project Number | 319210 |
| Agency | Grantová agentura České republiky |
| Duration | 2019-01-01 - 2021-12-31 |
Anotace |
| This project focuses on fatigue resistance of metastable austenitic steels with highly anisotropic properties made by selective laser melting (SLM). This technique can produce materials with very complex geometries but also with textured microstructure. That brings intriguing chance to produce the materials possessing directionally dependent mechanical properties. Furthermore, recent studies show dependency of martensitic transformation on grain orientation to the loading axis. The project aims to study a SLM made steel with strong texture influencing significantly the martensitic transformation. The fatigue life, alongside with active deformation mechanisms and induced martensitic transformation, will be studied in detail by advanced electron microscopy techniques. The neutron diffraction measurements will be pursued to quantify the SLM process-introduced residual stresses which need to be considered for the description of fatigue crack kinetics. The project will acquire unique multi-method insight and novel findings valuable for additive manufacturing community. |
