Patent No. EP3234209 (titled "Tough And Wear Resistant Ferrous Alloys Containing Multiple Hardphases") was filed by Oerlikon Metco on Dec 15, 2015. The application was issued on Jul 24, 2024.
Wear-resistant ferrous alloys with improved toughness and impact resistance, comprising a matrix of near-spherical and hypereutectic borides and/or borocarbides, with a volume fraction of near-spherical phases ≥5% and a volume fraction of hypereutectic rod-like phases ≤5%. The alloys exhibit a unique microstructure characterized by spherical boride morphology, eliminating the embrittling effects of rod-like phases, and achieve exceptional wear resistance and toughness through controlled phase chemistry and morphology.

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