Heterogeneous microstructure and mechanical behaviour of Al-8.3Fe-1.3V-1.8Si alloy produced by laser powder bed fusion
نویسندگان
چکیده
The relationship between processing parameters, microstructure, and mechanical properties of Al-8.3Fe-1.3V-1.8Si alloy processed by laser powder bed fusion is seldom studied. Therefore, fully dense alloys with two parameters were selected to investigate this key issue. results show that the low power scanning speed (S200) shows fan-shell-shaped melt pools tracks while another (S350) a deeper wider pool. Both obtain heterogeneous microstructure without secondary phase in pool (MP) nano-sized boundary (MPB). difference solid-solution strengthening Orowan MP MPB contributes compressive yield strength (S200: 380 ± 14 MPa S350: 705 16 MPa), nano-hardness different crack behaviours failure strains. This work indicates adjusting an effective method control alloy.
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ژورنال
عنوان ژورنال: Virtual and Physical Prototyping
سال: 2022
ISSN: ['1745-2759', '1745-2767']
DOI: https://doi.org/10.1080/17452759.2022.2155197