Effect of the Position in the Build Chamber on the Fatigue Strength of Additively Manufactured Maraging Steel MS1
The quality of additively produced parts and the achievable mechanical response may be affected by several factors, such as build orientation, heat treatment, or machining. A further rarely investigated factor is the position of the built part in the chamber with respect to inert gas flow. Previous...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/11/2/196 |
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| author | Dario Croccolo Snežana Ćirić-Kostić Massimiliano De Agostinis Stefano Fini Giorgio Olmi Nebojša Bogojević Zlatan Šoškić |
| author_facet | Dario Croccolo Snežana Ćirić-Kostić Massimiliano De Agostinis Stefano Fini Giorgio Olmi Nebojša Bogojević Zlatan Šoškić |
| author_sort | Dario Croccolo |
| collection | DOAJ |
| description | The quality of additively produced parts and the achievable mechanical response may be affected by several factors, such as build orientation, heat treatment, or machining. A further rarely investigated factor is the position of the built part in the chamber with respect to inert gas flow. Previous studies have highlighted that the interaction between gas flow and laser track may induce an intense vaporization with consequent lack of fusion, particle entrainment, drop in density and denudation of the produced part, which is likely to detrimentally affect mechanical properties. This study addresses the effect of part position on the fatigue strength of heat-treated maraging steel MS1 produced by an EOSINT M280 machine in a nitrogen environment. Novelty arises from the lack of studies in this field, especially under fatigue. A factorial plan with subsequent statistical analysis highlighted that positioning the part upstream with respect to the gas flow leads to a slightly lower fatigue strength; however, no significant differences are observed. The failure mode, involving initiation from subsurface porosities of the same size, is also unaffected. Finally, a fatigue limit of 26% of the ultimate tensile strength is found, which is consistent with previous outcomes. |
| first_indexed | 2024-03-11T08:31:30Z |
| format | Article |
| id | doaj.art-65f0cfa408a94a24a1d2eab204bd376f |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-11T08:31:30Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-65f0cfa408a94a24a1d2eab204bd376f2023-11-16T21:45:12ZengMDPI AGMachines2075-17022023-02-0111219610.3390/machines11020196Effect of the Position in the Build Chamber on the Fatigue Strength of Additively Manufactured Maraging Steel MS1Dario Croccolo0Snežana Ćirić-Kostić1Massimiliano De Agostinis2Stefano Fini3Giorgio Olmi4Nebojša Bogojević5Zlatan Šoškić6Department of Industrial Engineering (DIN), University of Bologna, 40136 Bologna, ItalyFaculty of Mechanical and Civil Engineering in Kraljevo, University of Kragujevac, 36000 Kraljevo, SerbiaDepartment of Industrial Engineering (DIN), University of Bologna, 40136 Bologna, ItalyDepartment of Industrial Engineering (DIN), University of Bologna, 40136 Bologna, ItalyDepartment of Industrial Engineering (DIN), University of Bologna, 40136 Bologna, ItalyFaculty of Mechanical and Civil Engineering in Kraljevo, University of Kragujevac, 36000 Kraljevo, SerbiaFaculty of Mechanical and Civil Engineering in Kraljevo, University of Kragujevac, 36000 Kraljevo, SerbiaThe quality of additively produced parts and the achievable mechanical response may be affected by several factors, such as build orientation, heat treatment, or machining. A further rarely investigated factor is the position of the built part in the chamber with respect to inert gas flow. Previous studies have highlighted that the interaction between gas flow and laser track may induce an intense vaporization with consequent lack of fusion, particle entrainment, drop in density and denudation of the produced part, which is likely to detrimentally affect mechanical properties. This study addresses the effect of part position on the fatigue strength of heat-treated maraging steel MS1 produced by an EOSINT M280 machine in a nitrogen environment. Novelty arises from the lack of studies in this field, especially under fatigue. A factorial plan with subsequent statistical analysis highlighted that positioning the part upstream with respect to the gas flow leads to a slightly lower fatigue strength; however, no significant differences are observed. The failure mode, involving initiation from subsurface porosities of the same size, is also unaffected. Finally, a fatigue limit of 26% of the ultimate tensile strength is found, which is consistent with previous outcomes.https://www.mdpi.com/2075-1702/11/2/196maraging steel MS1powder bed fusionbuild chamber positionnitrogen inert gasfatigue strength |
| spellingShingle | Dario Croccolo Snežana Ćirić-Kostić Massimiliano De Agostinis Stefano Fini Giorgio Olmi Nebojša Bogojević Zlatan Šoškić Effect of the Position in the Build Chamber on the Fatigue Strength of Additively Manufactured Maraging Steel MS1 Machines maraging steel MS1 powder bed fusion build chamber position nitrogen inert gas fatigue strength |
| title | Effect of the Position in the Build Chamber on the Fatigue Strength of Additively Manufactured Maraging Steel MS1 |
| title_full | Effect of the Position in the Build Chamber on the Fatigue Strength of Additively Manufactured Maraging Steel MS1 |
| title_fullStr | Effect of the Position in the Build Chamber on the Fatigue Strength of Additively Manufactured Maraging Steel MS1 |
| title_full_unstemmed | Effect of the Position in the Build Chamber on the Fatigue Strength of Additively Manufactured Maraging Steel MS1 |
| title_short | Effect of the Position in the Build Chamber on the Fatigue Strength of Additively Manufactured Maraging Steel MS1 |
| title_sort | effect of the position in the build chamber on the fatigue strength of additively manufactured maraging steel ms1 |
| topic | maraging steel MS1 powder bed fusion build chamber position nitrogen inert gas fatigue strength |
| url | https://www.mdpi.com/2075-1702/11/2/196 |
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