Nanowerk October 24, 2023
Researchers in France have shown a fatigue resistance phenomenon in nano-TiB2-decorated AlSi10Mg enabled by additive manufacturing. This fatigue resistance mechanism benefited from the three-dimensional dual-phase cellular nanostructure, which acted as a strong volumetric nanocage to prevent localized damage accumulation fatigue crack initiation. The intrinsic fatigue strength limit of nano-TiB2-decorated AlSi10Mg was shown to be close to its tensile strength. They showed that printed bulk nano-TiB2-decorated AlSi10Mg achieved fatigue resistance more than double those of other additive manufacturing Al alloys and surpassed those of high-strength wrought Al alloys. According to the researchers their method can be extended to the development of other dual-phase fatigue-resistant metals… read more. TECHNICAL ARTICLEÂ
Microstructure of the AM NTD-Al alloy. Credit: Nature Materials volume 22, pages1182–1188, August 17, 2023Â