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EnglishFatigue life calculation of a metal component accounts for different phenomena. External factors, such as load type, as well as internal microstructure, play a major role in determining fatigue failure. The present paper explores the relationship between micro-inclusions in hard steels and fatigue behaviour. Tension- compression and rotating bending tests were performed on two steel alloys with different grades. Micro- inclusions presence and characteristics are quantified by a non- destructive SEM technique. The stress field around micro- inclusions is quantified by Eshelby’s model. A microstructural study is applied to relate failure and micro-inclusion parameters. This approach leads to the identification of a modified life model and stress intensity factor in the two loading cases.
Micro-inclusions and load effects on metal fatigue: a modified life estimation model through experimental and analytical investigation / SESANA, RAFFAELLA; PESSOLANO FILOS, IRENE; Oyarzabal, Nicolas; Uva, Andrea. - ELETTRONICO. - (2020), pp. 1-12. ((Intervento presentato al convegno IRF2020: 7th International Conference Integrity-Reliability-Failure tenutosi a Funchal, Madeira, PT nel 6-10 Settembre 2020.
| Titolo: | Micro-inclusions and load effects on metal fatigue: a modified life estimation model through experimental and analytical investigation |
| Autori: | |
| Data di pubblicazione: | 2020 |
| Abstract: | Fatigue life calculation of a metal component accounts for different phenomena. External factors,... such as load type, as well as internal microstructure, play a major role in determining fatigue failure. The present paper explores the relationship between micro-inclusions in hard steels and fatigue behaviour. Tension- compression and rotating bending tests were performed on two steel alloys with different grades. Micro- inclusions presence and characteristics are quantified by a non- destructive SEM technique. The stress field around micro- inclusions is quantified by Eshelby’s model. A microstructural study is applied to relate failure and micro-inclusion parameters. This approach leads to the identification of a modified life model and stress intensity factor in the two loading cases. |
| ISBN: | 978-989-20-8315-3 |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| irf2020full-paper_sample_micro def.pdf | 2. Post-print / Author's Accepted Manuscript | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2819694
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