Synergistic enhancement of mechanical strength and thermal conductivity in a novel Al-Mg-Si-Zr-Ce alloy fabricated by powder bed fusion-laser beam

• A nearly full dense Al-Mg-Si-Zr-Ce alloy was fabricated via 1 wt% ZrH 2 addition during PBF-LB. • T6 simultaneously enhanced the strength and thermal conductivity of the PBF-LB prepared Al-Mg-Si-Zr-Ce alloy. • The synergistic improvement is primarily attributed to the bimodal grain structure resulting from T6 treatment. To address the growing demand for lightweight thermal management solutions, this study presents a novel Al-Mg-Si-Zr-Ce alloy designed for powder bed fusion-laser beam (PBF-LB), achieving exceptional synergy between mechanical strength and thermal conductivity through composition design (including Zr microalloying) and systematic process optimization. By incorporating 1 wt% ZrH 2 during PBF-LB…

• NN
  National Natural Science Foundation of China

  Awards: 52375393, 52071299
• CF
  Center for Autonomous Systems and Technologies

  Award: 2023QNRC001