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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing of Metals: Multiscale and Non-Equilibrium Solidification Fundamentals
Presentation Title Mechanical behavior of GRCop-42 alloy with nanoprecipitates prepared by laser powder bed fusion
Author(s) Patrick z. Hearne, Xuanyu Sheng, Anyu Shang, Ben Stegman, Ke Xu, Debargha Paul, Zhongxia Shang, Haiyan Wang, Xinghang Zhang
On-Site Speaker (Planned) Patrick z. Hearne
Abstract Scope Rocket engine components, such as combustion chambers, are often produced from the GRCopper family of alloys, which offers a unique profile of high temperature properties paired with excellent thermal conductivity. GRCop 42 alloy is a precipitation hardened alloy composed of copper chromium and niobium. Compared to other intensively studied alloys produced through laser powder bed fusion (LPBF), there are relatively limited information on GRCop 42 alloys. Here we examine the influence of volumetric energy density (VED) on LPBF GRCop-42 alloy. VED has prominent impact on the formation of nanoprecipitates. A threshold energy is identified for optimizing mechanical performance and minimizing print defects in this alloy.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Characterization, Copper / Nickel / Cobalt

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