Experimental studies of gray cast iron solidification with Linear Variable Differential Transformer
2015 (English)In: Advances in the Science and Engineering of Casting Solidification: An MPMD Symposium Honoring Doru Michael Stefanescu, The Minerals, Metals, and Materials Society, 2015, 305-312 p.Conference paper (Refereed)
Expansion during the solidification of gray cast iron was studied by the help of Linear Variable Differential Transformer (LVDT). The chemical composition of the samples was altered by adding two types of inoculant; Superseed® (50% Si, 1% Sr and 0.5% Al) and SMZ® (69% Si, 1.9% Ca, 0.7% Ba, 5% Zr, 4.5% Mn and 1.3% Al). During the solidification, the melt shows hardly no shrinkage in the primary austenite formation region, but the eutectic region shows higher expansion. The expansion during the eutectic growth increase, when the inoculant weight percentage escalates. At the same time, the eutectic cells get smaller and increases in cells number. The micrograph reveals undercooled and interdendritic graphite transformed to homogenized flake graphite. The inoculation process reduces the solidification rate along with different stable oxide and sulfide nuclei's created prior to the solidification, as a result eutectic cell gets more sites to grow. The change in micrograph and solidification rate was believed to modify the mechanical property of the cast.
Place, publisher, year, edition, pages
The Minerals, Metals, and Materials Society, 2015. 305-312 p.
Eutectic cells, Flake graphite, Gray cast iron, Inoculant, LVDT
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-170495DOI: 10.1002/9781119093367.ch36ScopusID: 2-s2.0-84931371774ISBN: 9781119082385OAI: oai:DiVA.org:kth-170495DiVA: diva2:839213
Advances in the Science and Engineering of Casting Solidification: An MPMD Symposium Honoring Doru Michael Stefanescu - TMS 2015 144th Annual Meeting and Exhibition, 15 March 2015 through 19 March 2015
QC 201507022015-07-022015-07-012015-07-02Bibliographically approved