Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/327168
Type: Artigo
Title: Comparison Of Si Refinement Efficiency Of Electromagnetic Stirring And Ultrasonic Treatment For A Hypereutectic Al-si Alloy
Author: Haghayeghi
Reza; de Paula
Leandro Cassio; Zoqui
Eugenio Jose
Abstract: The effects of electromagnetic stirring, ultrasonic treatment (UT), and their combination on the Si particles refinement in a hypereutectic Al-Si alloy (A390) were examined. All three physical methods yielded a considerable change in the shape and size of the particles, with UT producing the finest size. The creation of holes inside the Si particles via the explosion of cavitation bubbles was determined to occur before fragmentation of primary Si. In addition, transmission electron microscopy analysis revealed twin formation on primary Si particles by application of an external field in the liquid. UT of the melt was sufficient to produce fine primary Si particles with average size of similar to 12 A mu m. The primary Si particles refinement and eutectic Si modification improved the mechanical properties.
Subject: Aluminum Alloy
Automotive
Grain Refinement
Microstructure
Solidification
Editor: Springer
New York
Rights: fechado
Identifier DOI: 10.1007/s11665-017-2602-1
Address: https://link.springer.com/article/10.1007/s11665-017-2602-1
Date Issue: 2017
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
000399018700045.pdf2.1 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.