Mechanical Properties of Aluminium-Alumina Welding by Friction Welding

Abstract:

This experiment was aimed to investigate mechanical properties of aluminium-alumina welding by using friction welding. Effect of feed rate on hardness and shear strength of welding interface were determined. Cracking of alumina ceramics was also investigated. In addition, this research is to define and analyse temperature of an interface and deformation rate of aluminium during process. It was found that welding temperature increased with increasing feed rate. Increasing feed rate resulted in increasing of deformation rate and flow of aluminium lead to incresing of welded area. After welding, hardness of aluminium near interface was increased from 44-46 HV to 52.6-55.7 HV. Hardness of aluminium decreased with increasing distance from interface. The maximum shear strength was 29 MPa obtained from 0.3 mm/s feed rate. The minimum shear strength was 3.1 MPa obtained from 0.1 mm/s feed rate. Shear strength was deteriorated by both mechanical and thermal strength. It can be clearly seen that increasing feed rate increase welded area, resulted in higher interface strength.

• Periodical: Advanced Materials Research (Volumes 418-420)
• Pages: 1279-1287
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.418-420.1279
• Online since: December 2011
• Authors: Tummasook Mingmuang, Sukangkana Lee, Chawalit Thinvongpituk
• Keywords: Alumina, Aluminum (Al), Direct Shear Strength, Friction Welding

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