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Discussion of "nucleation mechanism of eutectic phases in aluminum-silicon hypoeutectic alloys"
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2005 (English)In: Metallurgical and Materials Transactions. A, ISSN 1073-5623, E-ISSN 1543-1940, Vol. 36, no 6, 1612-1613 p.Article in journal (Refereed) Published
Abstract [en]

A previous study tried to prove that each plate of Si in the ordinary Al-Si eutectic is nucleated individually by the action of a small iron-containing particle. The study justified the need for a more complete understanding of the Al-Si eutectic reaction in the absence of chemical modifiers in order to shed light on the complicated mechanisms operating in chemically modified Al-Si alloys. Reacting to this claim, the present authors state that the mechanisms of the ordinary eutectic reaction of Al-Si alloys have been well understood for several decades, thus a very strong evidence is required to justify a revision of that understanding. For their part, the authors of the first study justified their claim for a revision by considering results of thermal analyses, optical microscopy, scanning and transmission electron microscopy, and selected area electron diffraction (SAED) analyses and elemental X-ray mapping performed on samples of precisely controlled chemistry.

Place, publisher, year, edition, pages
2005. Vol. 36, no 6, 1612-1613 p.
Keyword [en]
Anisotropy, Crystals, Eutectics, Interfaces (materials), Metallographic microstructure, Nucleation, Silicon, Aluminum silicon alloys, Eutectic phases, Nucleation mechanism, Aluminum alloys
National Category
Metallurgy and Metallic Materials
URN: urn:nbn:se:kth:diva-156786DOI: 10.1007/s11661-005-0253-6ISI: 000229537000023ScopusID: 2-s2.0-21844437609OAI: diva2:768881

QC 20141205

Available from: 2014-12-05 Created: 2014-12-02 Last updated: 2014-12-05Bibliographically approved

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Hillert, Mats
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