Thesis Title: Processing Effects on Interphase Precipitation in Ti-Mo-V Microalloyed Steels
Abstract: In accordance with ever increasing demands in automotive applications for reduced fuel consumption, high strength low alloy (HSLA) steels have been developed to increase strength in order to minimize vehicle weight. Strong carbide forming elements are typically added to HSLA steels such that very fine precipitates (< 10 nm) can be obtained. These precipitates can repeatedly nucleate in association with the austenite (γ) / ferrite (α) interface during γ → α transformations, termed interphase precipitation, resulting in non-random dispersions of precipitates. The precipitation strengthening due to interphase precipitation in some recent steel designs has been estimated to be over 400 MPa, which is two or three times higher than that obtained in more conventional HSLA steels. Better understanding the effects of thermomechanical processing on the formation of interphase precipitation and the resulting mechanical properties could expand the use of this technology in newer steel designs.
Degree Plan: Doctorate of Philosophy
Completion: May 2019
Steel Center Student Since: August 2015
Bio: Caleb joined the ASPPRC in August 2015 after completing his Bachelor of Science in Metallurgical Engineering at The University of Alabama.