On the solidification of metal alloys during microgravity conditions
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, 9-13 p.Conference paper (Refereed)
Thermal analysis and unidirectional solidification experiments of mainly Al-, Sn- and Pb-base alloys has been performed during Rocket Flights, Parabolic aircraft flights, Space Lab, and GAS-Shuttle flights over three decades. In this presentation the special equipments developed and the experimental results from the different flight opportunities are to be presented. The cooling rates in the theraml analysis experiments have varied from around 0.01 to 10 C/Sec. The coarsnes fo the structure has been evaluated and the main effect is an increase in coarsness with decreasing gravity. The solidification undercooling was measured and it was mainly lower during microgravity conditions. The microgravity conditions gave mostly a larger effective partition coeffecient. The result will be presented and shortly discussed from existing theoretical standpoints and the difference will be analysed.
Place, publisher, year, edition, pages
The Minerals, Metals, and Materials Society, 2015. 9-13 p.
Dendrites, Metals, Microgravity, Solidification
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-170502ScopusID: 2-s2.0-84931413115ISBN: 9781119082385OAI: oai:DiVA.org:kth-170502DiVA: diva2:839370
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, Walt Disney World Orlando; United States
QC 201507022015-07-022015-07-012015-07-02Bibliographically approved