Researcher in Low Transformation Temperature Alloys for Additive Manufacturing

This is NTNU NTNU is a broad-based university with a technical-scientific profile and a focus in professional education. The university is located in three cities with headquarters in Trondheim. At NTNU, 9,000 employees and 43,000 students work to create knowledge for a better world. You can find more information about working at NTNU and the application process here. Video: https://www.youtube.com/watch?v=_KHQjc4ndas&t=41s About the position We are seeking a researcher with a background in welding, metal additive manufacturing or a related area of physical metallurgy for an approximately one-year position within SFI PhysMet (Centre for Sustainable and Competitive Metallurgical and Manufacturing Industry; www.ntnu.edu/physmet) at the Department of Materials Science and Engineering, NTNU. The position offers the opportunity to take a leading role in an experimental study of low transformation temperature (LTT) alloys. You will build on existing specimens and recent results, shape the remaining investigations and lead the preparation of a full-length journal manuscript together with the project team. We welcome applicants who enjoy connecting microstructural observations with physical metallurgy understanding and transforming experimental findings into clear scientific conclusions. Your immediate leader is Head of Department. About the job LTT alloys undergo transformation from austenite to martensite at relatively low temperatures. The associated volume expansion can counteract thermal contraction and offers a route to managing residual stresses in welding and additive manufacturing. Understanding how processing conditions and repeated thermal cycles affect their microstructure is important for assessing their potential in these applications. The experimental work has so far focused on directed energy deposition (DED). Single tracks, double tracks and small cuboids have been printed from three LTT alloys. Initial characterisation has included sectioning and light optical microscopy (LOM) to examine printing defects and dilution, Vickers hardness measurements, and electron backscatter diffraction (EBSD) on selected specimens, including reconstruction of prior-austenite grains. More recently, cubes have also been produced by laser powder bed fusion (LPBF) using two of the alloy powders. Microstructural characterisation of these specimens by LOM is currently in progress. You will bring the existing and emerging results together to investigate the...

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