|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Materials Processing Fundamentals
||Contactless generation of cavitation for particle dispersion in liquid iron and steel
||Martins Sarma, Ilmars Grants, Thomas Herrmannsdörfer, Gunter Gerbeth
|On-Site Speaker (Planned)
Metal matrix composites (MMCs) are an important material class providing a high degree of tailorability to fulfill specific requirements. Production of high melting point metal composites, such as Fe- and Ni-alloys, is limited to solid state routes. While liquid routes are economically more attractive, the particle flotation and agglomeration has to be prevented. This work investigates the feasibility of a contactless sonication of iron and steel using superposition of alternating (0.13T) and steady magnetic fields (up to 8T), focusing on the viability of micro-particle dispersion in these metals. The approach employs a floating-zone technique and is truly contactless and crucible-free permitting treatment of high melting point melts. ZrO2, ZrB2, ZrC, TiN, TiB2 and TiC particles are admixed in liquid iron and 316L steel, and the dispersion and particle refinement caused by cavitation treatment during melting and solidification is observed.
||Composites, Solidification, Iron and Steel