In-situ neutron/synchrotron study of microstructure evolution in additively manufactured tool steels
| Reference number | |
| Coordinator | UDDEHOLMS AB - UDDEHOLMS AB, Hagfors |
| Funding from Vinnova | SEK 500 000 |
| Project duration | November 2018 - April 2020 |
| Status | Completed |
| Venture | Research infrastructure - utilisation and collaboration |
| Call | Research infrastructure - utilisation and collaboration: Industrial pilot projects for neutron and photon experiments at large scale research infrastructures - 2018 |
| End-of-project report | 2018-04432__Uddeholms.pdf (pdf, 408 kB) |
Important results from the project
The long-term goal of the project is to add industrial partners´ competence in photon and neutron based large scale research techniques, as well as assist the research and alloy design for additive manufacturing. Uddeholms AB as an industrial parter knows more about functions of large scale facilities and better insight into how to make use of the techniques for their product design.
Expected long term effects
The small angle neutron scattering (SANS) experiments were performed at SANS-1 station of Heinz Maier-Leibnitz Zentrum (MLZ) at the German neutron facility FRM II. The 1D neutron profiles show there is strong multiple scattering caused by thick specimens, which prohibits accurate evaluation of the particle characteristics. Optimized measurements are needed to reach the goal and are under planning.
Approach and implementation
In current experiments specimens’ thickness is 0.8 mm. It worked for a study on precipitates in a Ni-based superalloy at SANS-1, but not for the maraging steel with large population of precipitates. Lessons are learned, and we highly recommend (1) conducting feasibility study on specimens and instrument capacity before formal measurements, (2) having an oral discussion with beamline experts on experimental details, and (3) having a literature survey on experimental setup of similar studies. In this way to improve the chance of a successful experiment.