RT Conference Proceedings
T1 Fatigue crack growth behaviour of selective laser-melted 18NI300 manufactured at 0º, 45º and 90º to perpendicular crack growth plane
A1 Moreno Cerezo, Pablo
A1 Aguilera-García, José Antonio
A1 García-González, Antonio Luis
A1 Moore, Steven
A1 Wheatley, Greg
A1 López-Crespo, Pablo
K1 Ciencia de los materiales - Congresos
AB The use of selective laser melting (SLM) as a method of additive manufacturing (AM) of valuableobjects has a promising future. Maraging steel is a widely used material due to its excellent qualities inAM, so it is essential to know the fatigue mechanisms existing in this material manufactured at differentangles. The current state of research in fracture mechanics applied to additive manufacturing has beenanalyzed to determine the importance of mechanical properties in this process. The CT samples werelaser fabricated in three orientations with respect to the intended crack plane; the angles used are 0-, 45-and 90-degrees respect from the displacement. Fatigue tests show a longer service life with the 90-degreespecimens than with the 0-degree specimens, with a reduction up to 20% for the 0-degree tests. On the45-degree specimens, a 40% reduction is observed compared to the 90-degree specimens, and there is noapparent reason. A fracture surface analysis has shown different textures on the 45-degree specimens,with rougher surfaces in certain tests due to a rougher application of load. This also results in sharperridges signifying rapid cracking due to shorter periods of higher forces. In addition, it is necessary tocontinue the study to obtain the da/dN curves, as well, the reasons for these difference in surface areas.
YR 2023
FD 2023-04
LK https://hdl.handle.net/10630/26951
UL https://hdl.handle.net/10630/26951
LA eng
NO UMA18-FEDERJA-250 y POCI-01-0247-FEDER-042536. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026