E-Thesis 44 views 42 downloads
Multi-Scale Simulation and Validation of Hot Rolling Processes for DP800 Steel / LIAM MOODY
Swansea University Author: LIAM MOODY
DOI (Published version): 10.23889/SUThesis.71075
Abstract
Dual-phase (DP) steels are of increased interest in the automotive sector due to their attractive blend of high strength and high formability, which helps automotive designers reduce vehicle weight, thereby driving down both manufacturing costs and vehicle emissions.Optimising the manufacture of Adv...
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Swansea
2025
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| Institution: | Swansea University |
| Degree level: | Doctoral |
| Degree name: | EngD |
| Supervisor: | Sackett, E.; Underhill, R.; and Gibson, I. |
| URI: | https://cronfa.swan.ac.uk/Record/cronfa71075 |
| Abstract: |
Dual-phase (DP) steels are of increased interest in the automotive sector due to their attractive blend of high strength and high formability, which helps automotive designers reduce vehicle weight, thereby driving down both manufacturing costs and vehicle emissions.Optimising the manufacture of Advanced High Strength Steels (AHSSs) is critical to the future of steel manufacturing, and as AHSSs have complex chemistries, this makes them extremely challenging to process. This project focuses on a laboratory scale process that attempts to mimic the manufacture of DP800 hot-band material (hot rolled material, before any annealing processes) on the industrial scale. This laboratory process was investigated in depth, and it was clear that challenges with geometry and physical restrictions gave rise to inconsistencies between the industrial and laboratory process. In parallel to this, a proprietary Tata Steel simulation model of the finishing mill and run out table was also evaluated and investigated in conjunction with JMat Pro®, a commercial simulation software. It was found that changing key parameters in the Tata Steel software did not have the intended outcome as expected, and when compared to the experimental data, this also confirmed that careful consideration was required when tuning these settings. Furthermore, JMat Pro® was utilised throughout this research to compare processing routes, understand the microstructural evolution at various stages through the hot mill and understand the effect of varying product chemistries in the laboratory hot rolling setting.The findings of this research complement the work of the Prosperity Partnership in the manufacture of novel alloys through Rapid Alloy Prototyping (RAP), in the pursuit of steel manufacturing in the laboratory setting. |
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| Keywords: |
Hot rolling, DP800, Steel, Hot mill, hot rolling simulation, AHSS |
| College: |
Faculty of Science and Engineering |
| Funders: |
EPSRC, Tata Steel |