XGBoost screens 38,052 combos to find titanium alloy with 1.73 GPa strength
bravo_abad · x · 2026-09-28
Bai and colleagues combined alloy chemistry and printing conditions into a single search: they trained an XGBoost model on 118 samples, using aluminium and chromium content plus laser power and scanning speed to predict mechanical properties.
The model screened 38,052 chemistry-processing combinations to pick experimental candidates. The best result reached 1.73 GPa tensile strength with 7.5% uniform elongation.
The key insight: rapid melting and cooling during printing preserves atomic structures conventional casting cannot, so alloy composition must be co-optimized with print parameters rather than chosen independently.
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