|About this Abstract
||MS&T21: Materials Science & Technology
||Deformation-induced Phase Transformations
||Ausforming of Ferrium M54 Ultra-high Strength Steel
||Suveen N. Mathaudhu, Yiwei Sun, Joshua Edwards, Jeffrey Lin, Thomas Kozmel
|On-Site Speaker (Planned)
||Suveen N. Mathaudhu
Ferrium M54 is a medium-carbon ultra-high strength steel with potential for achieving outstanding strength, toughness and stress corrosion cracking resistance. A processing route involving ausforming and tempering was implemented to reveal the interconnections between processing, microstructure and mechanical properties. Roll reduction and temperature were varied parametrically, and their effects of refinement of the lath martensite explored. In turn, the effect of the hierarchical microstructures on the hardness and tension properties, but pre- and post-aging is also investigated. An empirical model was developed for prediction of the optimal processing window for M54. The combination of ausforming and aging is shown to be an excellent pathway to refine martensite, accelerate the aging response and increase the strength in Ferrium M54 and likely other high-strength steels.