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Due to rapid heating and cooling as well as layer-by-layer fabrication, LPBFed Ti6Al4V alloy typically retains significant amounts of coarse columnar grain parallel to the build direction (BD) while substantial sub-stable needle-like α′ martensite exists perpendicular to the BD, resulting in significant differences in microstructures (anisotropy).

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Significant Improvement in the Strength-Toughness and Isotropy of Laser Powder Bed Fusion Ti6Al4V Alloy by Combining Heat Treatment with Subsequent Laser Shock Peening

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  • 发表日期：

    2025年

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  • Jinzhong Lu,
  • Haifei Lu,
  • Kaiyu Luo

摘要

Due to rapid heating and cooling as well as layer-by-layer fabrication, LPBFed Ti6Al4V alloy typically retains significant amounts of coarse columnar grain parallel to the build direction (BD) while substantial sub-stable needle-like α′ martensite exists perpendicular to the BD, resulting in significant differences in microstructures (anisotropy).