|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Frontiers in Solidification Science and Engineering
||Solidification Study of Spray-formed Cast Irons
||Guilherme Zepon, Julia F. M. Fernandes, Lucas Barcelos Otani, Claudemiro Bolfarini
|On-Site Speaker (Planned)
Spray forming process allows to manufacture products with refined microstructure, equiaxed grains and low levels of segregation directly from the liquid metal. Although the advantageous microstructure of spray formed products is well known, the question whether spray forming is a rapid solidification technique is still debated in the international community. It is well known that the cooling rate have a great effect on the final microstructure of cast irons. Slow cooling rates allow the formation of graphite as the carbon-rich phase instead of cementite. The objective of this work was to study the solidification of spray-formed cast irons through microstructure analysis of three different spray-formed cast irons. Microstructure evolutions were observed through microstructural analysis of the deposits and overspray powders. The results showed that all compositions presented graphite indicating that the solidification of the deposits took place with slow cooling rates, allowing the formation of near-equilibrium microstructures.
||Planned: Supplemental Proceedings volume