| Autor: |
Fernando de Souza Costa, Fagner de Carvalho Oliveira, Ronaldo Barbosa |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Journal of Materials Research and Technology, Vol 29, Iss , Pp 691-702 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2238-7854 |
| DOI: |
10.1016/j.jmrt.2024.01.115 |
| Popis: |
The application of advanced high-strength steels (AHSS) by automakers is now a consolidated reality. In this scenario, Dual Phase (DP) steels deserve special mention due to their versatility in a vast range of applications, since they present an excellent combination between high mechanical strength and high ductility. On the other hand, applying a classical DP steel, with microstructure formed essentially by ferrite and martensite, shear fracture and edge cracking, have regularly been observed in die-bending and flanging operations. In this work the improvement of stretch-flangeability, while still keeping an appropriate ductility, of a classical 980 MPa DP steel was pursued by testing different intercritical annealing conditions in a dilatometer and a Gleeble thermomechanical simulator. According to the results obtained in this study, the stretch-flangeability improvement of a cold-rolled dual phase steel intercritically annealed can be obtained by increasing the soaking and austempering temperatures. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
