Interaction between inclusions and the TRIP effect during tensile loading of an L-PBF 18Ni-300 maraging steel and effect on ductility
The influence of non-metallic inclusions on the tensile ductility of a direct aged 18Ni300 maraging steel produced by L-BBF was investigated on two materials having the same microstructure and a different content of non-metallic inclusions. The strain-induced transformation of austenite promotes the...
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| Language: | English |
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424023263 |
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| author | T. Tekin F. Naclerio R. Ipek A. Molinari |
| author_facet | T. Tekin F. Naclerio R. Ipek A. Molinari |
| author_sort | T. Tekin |
| collection | DOAJ |
| description | The influence of non-metallic inclusions on the tensile ductility of a direct aged 18Ni300 maraging steel produced by L-BBF was investigated on two materials having the same microstructure and a different content of non-metallic inclusions. The strain-induced transformation of austenite promotes the TRIP effect enhancing ductility. In the presence of a high amount of inclusions, the minimum strain needed to trigger strain-induced transformation is reached after necking, and the transformation cannot contribute to ductility. The effect of inclusions is to promote stress rising and strain accumulation, but mostly to make TRIP uneffective. To recover the effectiveness of TRIP and, in turn, increase ductility, the stability of reverted austenite should be reduced, in order to anticipate its transformation in martensite that is able to extend the uniform deformation step. |
| format | Article |
| id | doaj-art-cb7c4439f63c46b79973916665750c3a |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-cb7c4439f63c46b79973916665750c3a2024-12-26T08:54:28ZengElsevierJournal of Materials Research and Technology2238-78542024-11-013340474054Interaction between inclusions and the TRIP effect during tensile loading of an L-PBF 18Ni-300 maraging steel and effect on ductilityT. Tekin0F. Naclerio1R. Ipek2A. Molinari3University of Trento, Trento, Italy; Ege University, Izmir, TurkeyPontillo Officine Meccaniche & C., Scafati, SA, ItalyEge University, Izmir, TurkeyUniversity of Trento, Trento, Italy; Corresponding author.The influence of non-metallic inclusions on the tensile ductility of a direct aged 18Ni300 maraging steel produced by L-BBF was investigated on two materials having the same microstructure and a different content of non-metallic inclusions. The strain-induced transformation of austenite promotes the TRIP effect enhancing ductility. In the presence of a high amount of inclusions, the minimum strain needed to trigger strain-induced transformation is reached after necking, and the transformation cannot contribute to ductility. The effect of inclusions is to promote stress rising and strain accumulation, but mostly to make TRIP uneffective. To recover the effectiveness of TRIP and, in turn, increase ductility, the stability of reverted austenite should be reduced, in order to anticipate its transformation in martensite that is able to extend the uniform deformation step.http://www.sciencedirect.com/science/article/pii/S2238785424023263Maraging steelLaser powder bed fusionInclusionsDuctilityTRIP effect |
| spellingShingle | T. Tekin F. Naclerio R. Ipek A. Molinari Interaction between inclusions and the TRIP effect during tensile loading of an L-PBF 18Ni-300 maraging steel and effect on ductility Journal of Materials Research and Technology Maraging steel Laser powder bed fusion Inclusions Ductility TRIP effect |
| title | Interaction between inclusions and the TRIP effect during tensile loading of an L-PBF 18Ni-300 maraging steel and effect on ductility |
| title_full | Interaction between inclusions and the TRIP effect during tensile loading of an L-PBF 18Ni-300 maraging steel and effect on ductility |
| title_fullStr | Interaction between inclusions and the TRIP effect during tensile loading of an L-PBF 18Ni-300 maraging steel and effect on ductility |
| title_full_unstemmed | Interaction between inclusions and the TRIP effect during tensile loading of an L-PBF 18Ni-300 maraging steel and effect on ductility |
| title_short | Interaction between inclusions and the TRIP effect during tensile loading of an L-PBF 18Ni-300 maraging steel and effect on ductility |
| title_sort | interaction between inclusions and the trip effect during tensile loading of an l pbf 18ni 300 maraging steel and effect on ductility |
| topic | Maraging steel Laser powder bed fusion Inclusions Ductility TRIP effect |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424023263 |
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