A process for manufacturing an iron-based alloy comprising forming targeted fine oxide and/or carbide dispersoids in a melt, and sequentially precipitating transition-metal nitrides on the dispersoids for heterogeneous nucleation of equiaxed grains. An iron-based cast alloy having a highly equiaxed fine grain structure.
S. N. Lekakh et al., "Grain Refinement in Iron-Based Materials," U.S. Patents, Nov 2019.
Materials Science and Engineering
Peaslee Steel Manufacturing Research Center
Patent Application Number
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05 Nov 2019