激光束粉末床熔融铝-铁-铜合金,实现高强度和高导热性

IF 4.2 Q2 ENGINEERING, MANUFACTURING Additive manufacturing letters Pub Date : 2023-12-30 DOI:10.1016/j.addlet.2023.100191
Yue Cheng , Takanobu Miyawaki , Wenyuan Wang , Naoki Takata , Asuka Suzuki , Makoto Kobashi , Masaki Kato
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引用次数: 0

摘要

利用激光束粉末床熔融(PBF-LB)技术生产了一种 Al-2.5 %Fe-2 %Cu 三元合金,通过热力学计算确定,该合金在非平衡凝固过程中具有 α-Al/Al23CuFe4 两相共晶成分。PBF-LB 制造的试样具有超过 350 兆帕的高抗拉强度和约 140 W m-1 K-1 的低导热率。随后在 300 °C 下退火将热导率提高到 175 W m-1 K-1,同时不影响强度。这一改善归功于形成了大量的 Al23CuFe4 纳米沉淀物,这些沉淀物消耗了溶质元素。通过对导致强化的因素进行适当的管理,可以通过实施后热处理实现出色的强度-导电率平衡。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Laser-beam powder bed fusion of Al–Fe–Cu alloy to achieve high strength and thermal conductivity

Laser-beam powder bed fusion (PBF-LB) technique was used to produce an Al–2.5 %Fe–2 %Cu ternary alloy, featuring a two-phase eutectic composition of α-Al/Al23CuFe4 in non-equilibrium solidification, as determined by thermodynamic calculations. The specimen manufactured by PBF-LB exhibited a high tensile strength exceeding 350 MPa and a low thermal conductivity of approximately 140 W m−1 K−1. Subsequent annealing at 300 °C improved the thermal conductivity to 175 W m−1 K−1 without compromising the strength. This improvement was attributable to forming numerous Al23CuFe4 nanoprecipitates, which consumed solute elements. By appropriately managing the factors contributing to strengthening, a superior strength–conductivity balance can be achieved by implementing post-heat treatments.

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来源期刊
Additive manufacturing letters
Additive manufacturing letters Materials Science (General), Industrial and Manufacturing Engineering, Mechanics of Materials
CiteScore
3.70
自引率
0.00%
发文量
0
审稿时长
37 days
期刊最新文献
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