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https://hdl.handle.net/10316/100605
Título: | Multiaxial fatigue behaviour of maraging steel produced by selective laser melting | Autor: | Branco, R. Costa, J. D. Ferreira, J. A. Martins Capela, C. Antunes, F. V. Macek, W. |
Palavras-chave: | Multiaxial fatigue; Bending-torsion; Maraging steel; 18Ni300 steel; Selective laser melting; Strain energy density; SWT damage parameter; Theory of critical distances; Notch plasticity correction | Data: | 2021 | Projeto: | UIDB/00285/2020 16713 (PTDC/EMS-PRO/1356/2014) financed by Project 3599 (3599-PPCDT) and FEDER |
Título da revista, periódico, livro ou evento: | Materials and Design | Volume: | 201 | Resumo: | This paper studies the multiaxial fatigue behaviour of maraging steel samples produced by selective laser melting. Hollow cylindrical specimens with transverse circular holes are subjected to different in-phase bending-torsion loading scenarios. Fatigue crack initiation sites and fatigue crack angles are predicted from the first principal stress field. Fatigue lifetime is computed using a straightforward approach, based on a one-parameter damage law, developed via uniaxial low-cycle fatigue tests. The cyclic plasticity at the notch-controlled process zone is accounted for by combining the equivalent strain energy density concept and the theory of critical distances within a linear-elastic framework. Regardless of the multiaxial loading scenario, experimental observations and predicted lives are very well correlated. | URI: | https://hdl.handle.net/10316/100605 | ISSN: | 02641275 | DOI: | 10.1016/j.matdes.2021.109469 | Direitos: | openAccess |
Aparece nas coleções: | I&D CEMMPRE - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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1-s2.0-S0264127521000228-main.pdf | 5.81 MB | Adobe PDF | Ver/Abrir |
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