In-situ neutron/synchrotron study of microstructure evolution in additively manufactured tool steels

Reference number 2018-04432
Coordinator UDDEHOLMS AB - UDDEHOLMS AB, Hagfors
Funding from Vinnova SEK 500 000
Project duration November 2018 - November 2019
Status Ongoing
Venture Research infrastructure - utilisation and collaboration
Call Industriella pilotprojekt för neutron- och fotonexperiment vid storskalig forskningsinfrastruktur 2018

Purpose and goal

This project aims to understand the phase evolutions in maraging steels used in metal powder bed processes using laser melting technology to understand the potential needs for i) alloy optimization (chemical composition), ii) process optimization and iii) heat treatment optimization as well as to contribute to the development of the participating industrial partners’ competence in using neutron/synchrotron techniques for industrial applications.

Expected results and effects

A better insight into the microstructure evolution and mechanisms would have direct impact in developing e.g. next generation of tool steels dedicated for AM and therewith strengthening the position of Uddeholm as one of the leading metal powder supplier to the tooling industry using AM. Economic impact is expected from reduced manufacturing cost and effective use of raw materials as well as improved performance and durability of tools. Such development will also contribute to reduced environmental effect and the sustainability of our society.

Planned approach and implementation

In situ neutron diffraction and small angle scattering experiments might be performed at Heinz Maier-Leibnitz Zentrum (MLZ) with a focus on potentially using SPODI and SANS-1. SPODI provides info about phases such as austenite and martensite, while SANS-1 give us info about the intermetallic phases during heat treatment. However, we will also scout for potentially perform some experiment using Synchrotron, though that is not planned for the time being. The project work will be carried out through close collaboration between Uddeholm AB, RISE IVF and Linköping University.

The project description has been provided by the project members themselves and the text has not been examined by our editors.