Microstructures and mechanical properties of aluminum-transition metal binary alloys (Al-Fe, Al-Mn, and Al-Cr) processed by laser powder bed fusion

•Densification of the aluminum-transition metal LPBF samples (Al-3Fe, Al-3Mn, Al-3Cr) could be achieved.•The aluminum-transition metal LPBF samples were age-hardened by heat treatment.•The aluminum-transition metal LPBF samples exhibited excellent high-temperature strength.•Each aluminum-transition metal LPBF sample had distinct microstructure.•The strengthening factors have significantly differed depending on the added transition metals.