|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced High-Strength Steels
||F-11: Effects of Microstructure on the Strain Rate Sensitivity of Advanced Steels
||Rakan Alturk, Steven Mates, Fadi Abu-Farha, Zeren Xu
|On-Site Speaker (Planned)
Computer aided engineering (CAE) analyses of vehicle body structure performance are critically dependent upon the accuracy of material data acquired over strains rates that span from quasi-static to intermediate to high (0.001/s - 1000/s). In this work, the effects of the phases in the microstructure on the flow behavior of steels when loaded at high strain rates were investigated. The investigated steels were particularly selected to cover a wide array of microstructures (phases): ferrite-only, austenite-only, ferrite + austenite, ferrite + martensite, ferrite + martensite + austenite. The materials were deformed at two selected rates: quasi-static and high rate using the Kolsky Bar. With the aid of digital image correlation (DIC), the effect of strain rate on the different mechanical properties and the strain evolution was studied. Differences in rate-dependence among the investigated steels, and the relationships to the phases present in their microstructures, are discussed in detail.
||Planned: Supplemental Proceedings volume