Uniting high strength with large ductility in an additively manufactured fine-grained aluminum alloy

Wenhao Cha, Gan Li, Xi He, Jie Li, Daoxiu Li, Xiangfa Liu, Qiang Zhu, Sida Liu

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

3 Citations (Scopus)

Abstract

Actualizing the near net-shaping of lightweight aluminum (Al) alloys with both superior mechanical performance and complex geometry remains challenging. To address this issue, novel Al–Ti–C–B (TCB) master alloy powders were tailored as effective inoculators and introduced into the AlSi10Mg alloy powders to promote the heterogeneous nucleation of α-Al during powder bed fusion using laser beam (PBF-LB), leading to pronounced heterogeneous microstructure with bimodal fine-grains and improved distribution of eutectic Si. The modified alloy with a more refined and homogeneous microstructure exhibited an excellent strength–ductility combination due to microstructure modification, outperforming most previously reported commercial Al–Si alloys. © 2025 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
Original languageEnglish
JournalMaterials Research Letters
DOIs
Publication statusOnline published - 7 Jan 2025

Research Keywords

  • Additive manufacturing
  • AlSi10Mg alloy
  • Al–Ti–C–B master alloy
  • grain refinement
  • powder bed fusion–laser beam

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