Nanotwins-containing microstructure and superior mechanical strength of a Cu‒9Al‒5Fe‒5Ni alloy additively manufactured by laser metal deposition
Laser metal deposition (LMD) additive manufacturing was utilized to fabricate a Cu‒9Al‒
5Fe‒5Ni alloy with a hierarchical microstructure and superior mechanical strength. An
optimized processing window of LMD was established for printing the alloy with a relative
density greater than 99% using laser power of 1000–1500 W, scanning speed of 0.5–1.5
m/min and hatch space of 1.5–2 mm. The LMD-printed alloy exhibited a microstructure
consisting of a martensite β* phase, a Widmanstätten α phase, Fe 3 Al and NiAl …
5Fe‒5Ni alloy with a hierarchical microstructure and superior mechanical strength. An
optimized processing window of LMD was established for printing the alloy with a relative
density greater than 99% using laser power of 1000–1500 W, scanning speed of 0.5–1.5
m/min and hatch space of 1.5–2 mm. The LMD-printed alloy exhibited a microstructure
consisting of a martensite β* phase, a Widmanstätten α phase, Fe 3 Al and NiAl …
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