Abstract
PremoMet, a cobalt-free alloy, is engineered for high strength and toughness after quenching and tempering, positioning it as a potential replacement for AISI 4140 and AISI 8630 in gear and flange production, where improved fatigue life is anticipated. Utilizing open-die forging and ring-rolling for component fabrication, optimal properties are attained through meticulous microstructure control, with heat treatment being crucial. Representative seamless rings, produced under standard industrial conditions, were segmented and subjected to varying quenching and tempering regimens to assess microstructural evolution and resulting mechanical properties. This study presents tensile, hardness, and toughness data, complemented by scanning electron microscopy (SEM) for detailed microstructural analysis.
