• Researchers at theUniversity of Nottingham’s Centre for Additive Manufacturing(CfAM), in collaboration withThe Manufacturing Technology Centre(MTC) andAutodesk Research, have analyzed how interface orientation affects defect formation and microstructure evolution in laser powder bed fusion (LPBF) of IN718 and GRCop-42. • Published inAdditive Manufacturing Letters, the study evaluates horizontal, vertical, and angled interfaces to determine how deposition sequence and recoating direction influence alloy mixing and phase formation in aerospace-relevant bimetallic parts. • The work focuses on components such as rocket combustion chambers, where IN718 provides high-temperature strength and GRCop-42, a Cu-Cr-Nballoy developed by NASA, enhances heat dissipation. • Multi-material LPBF using selective powder deposition To produce the bimetallic samples, the researchers used anAconityMIDI+LPBF system equipped with a 1 kW continuous wave ytterbium fibre laser (80 μm spot diameter) and aSchaeffler Aerosintselective powder deposition (SPD) recoater. • The SPD system enables spatially controlled multi-material deposition in a single recoating pass, allowing different powders to be placed in defined regions of each layer. • Samples were fabricated with horizontal interfaces, vertical interfaces, and 45° angled transitions between IN718 and GRCop-42.

Article Summaries:

  • Researchers at the University of Nottingham’s Centre for Additive Manufacturing (CfAM), in collaboration with The Manufacturing Technology Centre (MTC) and Autodesk Research, have analyzed how interface orientation affects defect formation and microstructure evolution in laser powder bed fusion (LPBF) of IN718 and GRCop-42. Published in Additive Manufacturing Letters, the study evaluates horizontal, vertical, and angled interfaces to determine how deposition sequence and recoating direction influence alloy mixing and phase formation in aerospace-relevant bimetallic parts. The work focuses on c

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