| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2020)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2020)
|
| Presentation Title |
Investigation on the Evolution of Damage and Microstructure in Hot Flat and Caliber Rolling of Steels |
| Author(s) |
Gerhard Hirt, Conrad Liebsch, Shuhan Wang, Johannes Lohmar |
| On-Site Speaker (Planned) |
Gerhard Hirt |
| Abstract Scope |
In typical metal rolling processing chains most deformation is performed at elevated temperatures with mechanisms acting concurrently. While the metal deforms, porosity and cavities close but simultaneously micro-pores nucleate and grow. These newly formed pores can be closed again by further deformation while also the microstructure evolves. Due to this complexity damage mostly is neglected when seeking favorable processing conditions. This work first investigates relevant mechanisms independently using multi-scale FEA and laboratory scale experiments but then jointly regards them to assess damage in hot rolling. The closure and eventual healing of pores is analyzed in flat rolling while ductile damage is investigated in ring and caliber rolling. In all processes the microstructure evolution is observed. The results show that microstructure and damage evolution are coupled. The process conditions influence the intensity of ductile damage, but initial microstructure as well as shape and orientation of pores play an equally great roll. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |