激光粉末床熔融技术制造的铝铁铜合金熔池结构中的非均质变形

Y Cheng, Y Otani, N Takata, A Suzuki, M Kobashi, M Kato
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引用次数: 0

摘要

激光粉末床熔融(L-PBF)加工的 Al-2.5Fe-2Cu (mass%) 合金显示出 340 兆帕以上的高抗拉强度和明显的方向依赖性。在 L-PBF 过程中,由于局部熔化和快速凝固,样品呈现出特有的不均匀微观结构(熔池结构)。沿熔池边界局部的粗化蜂窝结构导致局部软区受到熔池结构的影响。这种局部脆弱性导致了试样拉伸延性的方向依赖性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Inhomogeneous deformation in melt-pool structure of Al-Fe-Cu alloy manufactured by laser powder bed fusion
The laser powder bed fusion (L-PBF) processed Al–2.5Fe–2Cu (mass%) alloy exhibited a high tensile strength above 340 MPa and pronounced directional dependence. The sample exhibited a characteristic inhomogeneous microstructure (in melt-pool structure) arising from the local melting and rapid solidification in the L-PBF process. The coarsened cellular structure localized along the melt pool boundary resulted in the local soft regions affected by the melt pool structure. The local vulnerability contributed to the direction dependence of the tensile ductility of the specimen.
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