Electromagnetic Stirring versus ECAP: Morphological Comparison of Al-Si-Cu Alloys to Make the Microstructural Refinement for Use in SSM Processing
Joint Authors
Zoqui, Eugênio José
Torres, Luis Vanderlei
Torres, Luis Fernando
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-10-20
Country of Publication
Egypt
No. of Pages
7
Abstract EN
This work evaluates the morphological evolution at the semisolid state of the Al-4.0wt%Si-2.5wt%Cu alloy produced by direct chill casting under electromagnetic stirring (EMS) and by one equal channel angular pressing (ECAP) pass.
The ECAP emerged as a promising technique capable of reduction and homogeneous metals microstructure imposing large deformations occurs in a matrix that contains two channels of the same cross-sectional area and forms an angle of 120°.
The materials were submitted to reheating treatment in condition of 60% solid fraction at treatment times of 0, 30, and 90 s.
Comparing the two cases, we have the presented ECAP process that had an excellent response to the recovery and recrystallization mechanisms, and refined microstructures ideal for thixoforming were produced.
Primary particle sizes of about 45 μm and grain sizes of about 75 μm and a circularity shape factor of more than 0.60 were obtained.
The low silicon alloy, Al-4.0wt%Si-2.5wt%Cu, presented excellent refinement when processed via equal channel angular pressing, presenting good morphological stability at the semisolid state, without significant changes in size or shape of the solid particles.
This fully globular structure is favourable for thixoforming processes.
American Psychological Association (APA)
Torres, Luis Vanderlei& Torres, Luis Fernando& Zoqui, Eugênio José. 2016. Electromagnetic Stirring versus ECAP: Morphological Comparison of Al-Si-Cu Alloys to Make the Microstructural Refinement for Use in SSM Processing. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1096502
Modern Language Association (MLA)
Torres, Luis Vanderlei…[et al.]. Electromagnetic Stirring versus ECAP: Morphological Comparison of Al-Si-Cu Alloys to Make the Microstructural Refinement for Use in SSM Processing. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-7.
https://search.emarefa.net/detail/BIM-1096502
American Medical Association (AMA)
Torres, Luis Vanderlei& Torres, Luis Fernando& Zoqui, Eugênio José. Electromagnetic Stirring versus ECAP: Morphological Comparison of Al-Si-Cu Alloys to Make the Microstructural Refinement for Use in SSM Processing. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1096502
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096502