Optimizing laser power of directed energy deposition process for homogeneous AISI M4 steel microstructure

Rúben Tome Jardin,Víctor Tuninetti,Jérôme Tchoufang Tchuindjang,Laurent Duchêne,Neda Hashemi,Hoang Son Tran,Raoul Carrus,Anne Mertens,Anne Marie Habraken

Optics & Laser Technology（2023）

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摘要

•The optimization method based on FEM simulations of DED process allows the computation of optimal laser power functions.•Constant and variable laser power functions generate different temperature histories and hardness microprofiles/nanomaps.•Optimized DED laser power function leads to microscale homogeneity, although variations in nano-hardness are still detected.

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关键词

energy deposition process,laser power,microstructure,steel

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