Novel materials design for defect free additive manufacturing of difficult to weld Ni-based alloys.

Reference number
Coordinator Linköpings universitet - Department of Management and Engineering
Funding from Vinnova SEK 5 000 000
Project duration June 2018 - May 2021
Status Ongoing
Venture The strategic innovation programme for Metallic material
Call Towards a world leading position in additive manufacturing for metallic materials.

Purpose and goal

High-performance Ni-base superalloys with excellent creep and oxidation resistance have been found very difficult to process by additive manufacturing (AM) without significant cracking issues. In this project, we take a comprehensive approach to understand the problem of cracking during additive manufacturing of advanced Ni-base materials and based on that to develop new materials solution for additive manufacturing of the crack-free Ni-base superalloys utilizing combination of tailored alloy design, AM process and post-AM process development.

Expected results and effects

The number of materials available for additive manufacturing (AM) is very limited and as a result AM is not utilized to its full potential but still rather restricted to a limited number of applications. This project will address the methods needed for the development of new AM materials with tailored properties and more robust process characteristics. By building on existing knowledge, advanced material characterization techniques and thermodynamic modelling tools, a more rapid development of new AM materials can be expected.

Planned approach and implementation

The project is divided into 6 work packages: WP1: Evaluation of cracking susceptibility for different Ni-base superalloys WP2: Evaluation of the processing window for AM fabrication of crack-free Ni-base superalloys WP3: Utvärdering av en ny legeringssammansättningar och effekten av batchsvariationer WP4: Optimized heat treatment for the new alloy composition WP5: Characterization of mechanical, physical and thermal properties of the new alloys WP6: Coordination and dissemination

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

Last updated 26 February 2019

Reference number 2018-00804

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