期刊
SCRIPTA MATERIALIA
卷 117, 期 -, 页码 16-19出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2016.02.018
关键词
Eutectic solidification; Atom probe tomography; Aluminium alloys; Eutectic modification; Transmission electron microscopy
类别
资金
- German Federal Ministry of Economics and Technology [AiF 17204 N]
- European Regional Development Fund (AME-Lab) [C/4-EFRE-13/2009/Br]
- German Research Foundation (DFG)
- Federal State Government of Saarland [INST 256/298-1 FUGG]
- Erasmus Mundus Doctoral Programme DocMASE of the European Commission [FPA 2011-0020]
- VINNOVA Strategic Faculty Grant VINNMER Marie Curie Chair [2011-03464]
- Major International (Regional) Joint Research Project from China [51420105005]
Atom probe tomography was used to compare Na and Sr modified Al-Si hypoeutectic alloys. Both Na and Sr promote the formation of nanometre-sized clusters in the Si eutectic phase. Compositional analyses of the clusters show an Al:Sr ratio of 2.92 +/- 0.46 and an Al:Na ratio of 1.07 +/- 0.23. It is proposed that SrAl2Si2 and NaAlSi clusters are formed at the Si/liquid interface and take part in the modification process by altering the eutectic Si growth. (C) 2016 Elsevier Ltd. All rights reserved.
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