Effect of Thermally Formed Alumina on Density of AlMgSi Alloys Extrudate Recycled Via Solid State Technique

Authors

  • Abdullah Wagiman Sustainable Manufacturing and Recycling Technology, Advanced Material Manufacturing Center (SMART-AMMC), Universiti Tun Hussein Onn Malaysia, Johor, Malaysia
  • Mohammad Sukri Mustapa Structural Integrity and Monitoring Research Group, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia
  • Mohd Amri Lajis Sustainable Manufacturing and Recycling Technology, Advanced Material Manufacturing Center (SMART-AMMC), Universiti Tun Hussein Onn Malaysia, Johor, Malaysia
  • Shazarel Shamsudin Sustainable Manufacturing and Recycling Technology, Advanced Material Manufacturing Center (SMART-AMMC), Universiti Tun Hussein Onn Malaysia, Johor, Malaysia
  • Mahmod Abd Hakim Sustainable Product Development Research Group, Center for Diploma Studies, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia
  • Rosli Asmawi Structural Integrity and Monitoring Research Group, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

DOI:

https://doi.org/10.37934/arfmts.87.2.137144

Keywords:

In-situ alumina, Thermal treatment, Aluminium recycling, Solid state, Hot extrusion

Abstract

Solid state recycling of aluminium via hot extrusion is a sustainable technique. The process performed before hot extrusion plays a vital role on the extrudate properties. In this study, the effect of naturally and thermally formed in-situ alumina on the extrudate density were investigated. Fours type of material identified as a solid as-received, non-treated recycle chip, 300 0C thermally treated recycle chip and 500 0C thermally treated recycle chip were prepared for the experiment. Prior to extrusion, the recycle chips were compacted into a chip-based billet, preheated and immediately extruded into a semi-finished product. The density test performed on the chip-based extrudate found that the type of chips influenced the density. The chip-based extrudate made of 300 0C and 500 0C thermally treated chips resulted in higher density than solid as-received and non-treated chips. Chip-based extrudate produced from 500 0C thermally treated chips resulted in density of 2724 kg/m3, which is the highest among the specimen. This density value was 0.7 % higher compared to the solid as-received extrudate. Microstructure examination on the cross-section revealed the alumina entrapped in the chip-based extrudate. The alumina entrapped in 500 0C thermally treated chips specimen was more prone than the non-treated and 300 0C thermally-treated chips. This finding explains the variation in the extrudate density.

Author Biographies

Abdullah Wagiman, Sustainable Manufacturing and Recycling Technology, Advanced Material Manufacturing Center (SMART-AMMC), Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

abdulla@uthm.edu.my

Mohammad Sukri Mustapa, Structural Integrity and Monitoring Research Group, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

sukri@uthm.edu.my

Mohd Amri Lajis, Sustainable Manufacturing and Recycling Technology, Advanced Material Manufacturing Center (SMART-AMMC), Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

amri@uthm.edu.my

Shazarel Shamsudin, Sustainable Manufacturing and Recycling Technology, Advanced Material Manufacturing Center (SMART-AMMC), Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

shazarel@uthm.edu.my

Mahmod Abd Hakim, Sustainable Product Development Research Group, Center for Diploma Studies, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

hakim@uthm.edu.my

Rosli Asmawi, Structural Integrity and Monitoring Research Group, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia

roslias@uthm.edu.my

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Published

2021-09-22

How to Cite

Abdullah Wagiman, Mustapa, M. S. ., Lajis, M. A. ., Shamsudin, S. ., Mahmod Abd Hakim, & Rosli Asmawi. (2021). Effect of Thermally Formed Alumina on Density of AlMgSi Alloys Extrudate Recycled Via Solid State Technique. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 87(2), 137–144. https://doi.org/10.37934/arfmts.87.2.137144
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