Effects of Cu on the microstructures and tensile properties of thixoformed Al-Si alloys

M. S. Salleh, Mohd. Zaidi Omar, J. Syarif, K. S. Alhawari, M. N. Mohammed, M. S. Salleh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, the effects of copper content on the microstructures and tensile properties of thixoformed Al-5Si-xCu-0.5Fe (x =1.0, 2.0 and 3.0wt. %) were investigated. For this study, three different alloys having various amounts of copper were prepared using cooling slope casting before thixoforming. The semi-solid liquid range for the alloys were estimated using the diffrential scanning calorimetry (DSC) analysis. The samples were thixoformed at 40% liquid fraction. Some of these samples were treated with a T6 aging process. The thixoformed and thixoformed T6 samples were then characterized by optical microscopy, scanning electron microscope (SEM) and energy dispersive X-ray (EDX) as well as tensile tests. The different phases formed in the thixoformed and thixoformed T6 samples were throughly investigated.The results indicate that as copper content increases, the tensile strength also increases, which might due to precipitation hardening. The thixoformed T6 alloys attained an ultimate tensile strength (UTS) as high as 303 MPa when Cu content is 3.0wt.%.

Original languageEnglish
Title of host publicationSolid State Phenomena
PublisherTrans Tech Publications Ltd
Pages91-98
Number of pages8
Volume217-218
ISBN (Print)9783038352204
DOIs
Publication statusPublished - 2014
Event13th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2014 - Muscat
Duration: 15 Sep 201417 Sep 2014

Publication series

NameSolid State Phenomena
Volume217-218
ISSN (Electronic)16629779

Other

Other13th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2014
CityMuscat
Period15/9/1417/9/14

Fingerprint

tensile properties
Tensile properties
Copper
microstructure
Microstructure
Tensile strength
copper
tensile strength
Scanning
Age hardening
Liquids
Calorimetry
precipitation hardening
Optical microscopy
scanning
Casting
Electron microscopes
tensile tests
liquids
Aging of materials

Keywords

  • Al-5Si-xCu-0.5Fe alloys
  • Cooling slope
  • T6 heat treatment
  • Tensile properties
  • Thixoforming

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

Cite this

Salleh, M. S., Omar, M. Z., Syarif, J., Alhawari, K. S., Mohammed, M. N., & Salleh, M. S. (2014). Effects of Cu on the microstructures and tensile properties of thixoformed Al-Si alloys. In Solid State Phenomena (Vol. 217-218, pp. 91-98). (Solid State Phenomena; Vol. 217-218). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/SSP.217-218.91

Effects of Cu on the microstructures and tensile properties of thixoformed Al-Si alloys. / Salleh, M. S.; Omar, Mohd. Zaidi; Syarif, J.; Alhawari, K. S.; Mohammed, M. N.; Salleh, M. S.

Solid State Phenomena. Vol. 217-218 Trans Tech Publications Ltd, 2014. p. 91-98 (Solid State Phenomena; Vol. 217-218).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Salleh, MS, Omar, MZ, Syarif, J, Alhawari, KS, Mohammed, MN & Salleh, MS 2014, Effects of Cu on the microstructures and tensile properties of thixoformed Al-Si alloys. in Solid State Phenomena. vol. 217-218, Solid State Phenomena, vol. 217-218, Trans Tech Publications Ltd, pp. 91-98, 13th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2014, Muscat, 15/9/14. https://doi.org/10.4028/www.scientific.net/SSP.217-218.91
Salleh MS, Omar MZ, Syarif J, Alhawari KS, Mohammed MN, Salleh MS. Effects of Cu on the microstructures and tensile properties of thixoformed Al-Si alloys. In Solid State Phenomena. Vol. 217-218. Trans Tech Publications Ltd. 2014. p. 91-98. (Solid State Phenomena). https://doi.org/10.4028/www.scientific.net/SSP.217-218.91
Salleh, M. S. ; Omar, Mohd. Zaidi ; Syarif, J. ; Alhawari, K. S. ; Mohammed, M. N. ; Salleh, M. S. / Effects of Cu on the microstructures and tensile properties of thixoformed Al-Si alloys. Solid State Phenomena. Vol. 217-218 Trans Tech Publications Ltd, 2014. pp. 91-98 (Solid State Phenomena).
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