Precipitation during hot rolling and cooling
| Reference number | |
| Coordinator | Uppsala Synchrotronix AB - c/o Edwards Science & Technology AB |
| Funding from Vinnova | SEK 499 000 |
| Project duration | February 2020 - March 2022 |
| Status | Completed |
| Venture | Research infrastructure - utilisation and collaboration |
| Call | Industrial pilot projects for the utilisation of neutron and photon based techniques at large-scale infrastructures - Autumn 2019 |
| End-of-project report | 2019-05294__SSAB EMEA.pdf (pdf, 481 kB) |
Purpose and goal
The properties of microalloyed high-strength steels depend partly on precipitates. Precipitation takes place during hot rolling and cooling and in order to be able to study the development of the precipitates at high temperature, in-situ measurements are required. This project would provide more knowledge about the possibility of measuring in-situ and also contribute to making contacts within the LSI area. Measurements would be performed on two variants of microalloyed steels in order to study the development of precipitations during hot rolling and cooling.
Expected results and effects
Measurements were first performed statically on samples from hot rolling and lab experiments. It was not possible to make in-situ measurements with deformation at high temperature, but in-situ measurements during heating and cooling were made and it was a big step in the right direction. The results from the measurement will directly provide information on precipitation. They will also be used for calibration / verification of models for the hot rolling process.
Planned approach and implementation
Measurements were performed on Petra III. A test measurement at P07 showed that the signal strength was not sufficient. A test measurement at P21 showed good signal strength and provided valuable input for the next measurement. A second measurement was made with both static and in-situ measurements. Neither SSAB nor LU was allowed to travel and it was only allowed with one person to attend the actual measurement on P21. Thanks to Teams and the fact that Usync had no travel restrictions, it was possible for everyone to follow the measurements online.