A review of Laser Powder Bed Fusion Additive Manufacturing of aluminium alloys: Microstructure and properties
نویسندگان
چکیده
Additive manufacturing (AM) of metallic alloys for structural and functional applications has attracted significant interest in the last two decades as it brings a step change philosophy design manufacturing. The ability to fabricate complex geometries not amenable conventional manufacturing, potential reduce component weight without compromising performance, is particularly attractive aerospace automotive applications. This culminated rapid progress AM with Ti- Ni-based alloys. In contrast, development Al-alloys been slow, despite their widespread adoption industry owing an excellent combination low density high strength-to-weight ratio. Research date focused on castable weldable AlSiMg-based (which are less desirable demanding applications), well new AM-specific AlMgSc (based 5xxx series). However, strength wrought have typically unsuitable due unfavourable microstructural characteristics under directional solidification conditions. Nevertheless, recent research shown that there promise overcoming associated challenges. Herein, we present review current status Al-alloys. We primarily focus characteristics, exploring how these influence mechanical properties. metallurgical understanding microstructure defect formation during discussed, along promising various modification methodologies. Finally, remaining challenges high-strength discussed.
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ژورنال
عنوان ژورنال: Additive manufacturing
سال: 2021
ISSN: ['2214-8604', '2214-7810']
DOI: https://doi.org/10.1016/j.addma.2021.102155