|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced High-Strength Steels
||Effect of B2 Morphology on the Mechanical Properties of Dispersion Strengthened Lightweight Steels
||A. Zargaran, C. Nam, S.-H. Kim, Nack J. Kim
|On-Site Speaker (Planned)
There has been growing interest in development of lightweight steels with a high strength and reduced density for automotive applications. Recently, a new type of lightweight steels has been developed possessing much higher strength and work hardening rate than conventional lightweight steels. Excellent properties of these lightweight steels mainly comes from a presence of B2 particles, which are dispersed in three morphologies in austenite matrix; fine particles formed along austenite grain boundaries and within austenite matrix, and band type particles elongated along rolling direction. It is expected that these B2 particles with different morphologies would have different effect on mechanical properties of dispersion strengthened lightweight steels, which is the main objective of the present study. In the present study, two steels with nominal compositions of Fe-10Al-15Mn-0.8C-5Ni and Fe-8Al-17Mn-1C-5Ni (in wt.%) were subjected to microstructural analyses and mechanical testing including tensile tests as well as hole expansion ratio and bendability tests.
||Planned: Supplemental Proceedings volume