In this work the results of an experimental analysis performed on different steels of commercial use having different microstructure and yield value are reported. The materials were characterized by performing tensile and torsion tests, bringing the material up to rupture. The specimens were extracted according to different orientations to verify the influence of anisotropy on the size and distribution of micro-voids present in the broken material. After the mechanical tests, an analysis was made of the amount of micro-voids present in the original, not deformed material and in the deformed material until failure. The results obtained show that for all the analyzed steels the initial fraction of micro-voids is negligible, and no growth or formation of further voids is observed as the applied plastic deformation increases, even for strain values close to rupture.

Analysis of the micro-voids fraction in structural steels and its evolution during plastic deformation until failure / Iob, F.; Cortese, L.; Di Schino, A.; Coppola, T.. - In: PROCEDIA STRUCTURAL INTEGRITY. - ISSN 2452-3216. - 24:(2019), pp. 319-323. (Intervento presentato al convegno 48th International conference on stress analysis, AIAS 2019 tenutosi a Perugia; Italy) [10.1016/j.prostr.2020.02.029].

Analysis of the micro-voids fraction in structural steels and its evolution during plastic deformation until failure

Cortese L.;
2019

Abstract

In this work the results of an experimental analysis performed on different steels of commercial use having different microstructure and yield value are reported. The materials were characterized by performing tensile and torsion tests, bringing the material up to rupture. The specimens were extracted according to different orientations to verify the influence of anisotropy on the size and distribution of micro-voids present in the broken material. After the mechanical tests, an analysis was made of the amount of micro-voids present in the original, not deformed material and in the deformed material until failure. The results obtained show that for all the analyzed steels the initial fraction of micro-voids is negligible, and no growth or formation of further voids is observed as the applied plastic deformation increases, even for strain values close to rupture.
2019
48th International conference on stress analysis, AIAS 2019
anisotropy; fracture; mechanics; microstructure
04 Pubblicazione in atti di convegno::04c Atto di convegno in rivista
Analysis of the micro-voids fraction in structural steels and its evolution during plastic deformation until failure / Iob, F.; Cortese, L.; Di Schino, A.; Coppola, T.. - In: PROCEDIA STRUCTURAL INTEGRITY. - ISSN 2452-3216. - 24:(2019), pp. 319-323. (Intervento presentato al convegno 48th International conference on stress analysis, AIAS 2019 tenutosi a Perugia; Italy) [10.1016/j.prostr.2020.02.029].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1453748
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