|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Metal and Polymer Matrix Composites II
||Matrix Tailoring by Mn Addition in In-situ Liquid Metallurgy Synthesized Fe-TiB2 High Modulus Steels
||Christian Baron, Hauke Springer, Dierk Raabe
|On-Site Speaker (Planned)
Lightweight structural materials demand the integration of sufficiently high Young’s moduli, yield strengths and low densities. As conventional alloying is limited, particle-reinforced steels offer the possibility to reduce the density without a loss in Young’s modulus. In contrast to costly powder metallurgy routes, in-situ syntheses via liquid metallurgy are the most effective way to obtain low-cost metal matrix composites (MMCs) with optimum particle / matrix interaction. However, as stress is likely to concentrate around reinforcements cracks may be initiated at particle / matrix interfaces. Crack resistant matrices are necessary in order to prevent premature material failure. Hence, iron-boron-titanium (Fe-B-Ti) base melts were systematically alloyed by varying manganese (Mn) additions to obtain TiB2 particles in diverging matrix microstructures after solidification. The influence of microstructural evolution on specific engineering properties was investigated to obtain high specific moduli (E/ρ).
||Planned: A print-only volume