团队关于ZL114铝合金电弧熔丝增材制造的论文在Materials Letters发表! - C.V. (English) - 黄 科
Microstructure and properties of a novel high-performance Al-Si-Mg alloy fabricated by wire-arc directed energy deposition
https://doi.org/10.1016/j.matlet.2024.136010
Abstract
In this study, a novel high-performance Al-Si-Mg alloy was fabricated using wire-arc directed energy deposition (wire-arc DED), resulting in remarkable mechanical properties, including a yield strength of 299.2 ± 1.3 MPa, an ultimate tensile strength of 376.5 ± 8.1 MPa and an elongation an elongation of 6.9 ± 0.3 %. The heat-treated samples exhibited a uniform distribution of a significant quantity of nanoscale β'' phases, serving as the primary strengthening phase and contributing to substantial precipitation strengthening. The addition of Mn facilitates the formation of Al6(Mn, Fe) phase, effectively suppressed the formation of detrimental Fe-rich phases. However, the presence of numerous pores and the lack of fusion regions emerged as significant factors impacting mechanical properties.
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2024
04-12
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2024
03-29
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2024
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2024
03-19
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