Prediction of microstructure and properties in duplex stainless steel welds
| Reference number | |
| Coordinator | Swerea KIMAB AB |
| Funding from Vinnova | SEK 1 000 000 |
| Project duration | August 2014 - October 2015 |
| Status | Completed |
| Venture | The strategic innovation programme for Metallic material |
Purpose and goal
The pre study´s purpose and objectives have been met : The foundation of a tool for predicting the microstructure of duplex welds have been developed. By connecting thermodynamic and kinetic calculations with FE simulations of welds with verification through experimental welding, the resulting weld metal microstructure can predicted in a good way.
Results and expected effects
The pre study has successfully combined thermodynamic and kinetic calculations with the use of FE simulations of welding processes and predicted the weld result. These have been verified through experiments. These results have been implemented in the beta version of the computer tool that was intended to develop. By collecting the complete consortium at meetings, and finally, in a workshop participants from across the value chain have been involved in fruitful discussions that have led to improvements of both the approach and way of workingas well as of the final software.
Approach and implementation
The pre study has been run by a project committee with representatives from the participating companies and the research organizations and the active participation of the director of research at Jernkontoret . In total seven meetings were held during the project and Alexander Thulin from Outokumpu Stainless was chairman. The project work has been successful in terms of the results that have come up. The duration was extended due to illness in the project leader´s family. The project has nevertheless met its targets and has been completed in good order.