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Metals 2018, 8(8), 637; https://doi.org/10.3390/met8080637

Transient Liquid Phase Bonding of Semi-Solid Metal 7075 Aluminum Alloy using ZA27 Zinc Alloy Interlayer

1
Department of Engineering, Songkhla Rajabhat University, Songkhla 90000, Thailand
2
Department of Industrial Engineering, Rajamangala University of Technology Srivijaya, Songkhla 90000, Thailand
*
Author to whom correspondence should be addressed.
Received: 6 July 2018 / Revised: 24 July 2018 / Accepted: 8 August 2018 / Published: 13 August 2018
(This article belongs to the Special Issue Diffusion Bonding and Brazing of Advanced Materials)
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Abstract

Transient Liquid Phase Bonding (TLPB) process of semi-solid metal 7075 aluminum alloys (SSM7075) using 50 μm thick of ZA27 zinc alloys as interlayers for the experiment were carried out under bonding temperatures of 480 and 540 °C and bonding times of 30, 60, 90 and 120 min respectively. In the bonding zone, the semi-solid state of ZA27 zinc alloy interlayers were diffused into the SSM7075 aluminum alloy. Examination of the bonding zone using Scanning Electron Microscope (SEM) and Energy-dispersive X-ray spectroscopy (EDS) showed that the precipitation of the intermetallic compound of η(Zn–Al–Cu), β(Al2Mg3Zn3), T′(Zn10Al35Cu55) and MgZn2 were formed in the bonding zone. The better homogenized microstructure in the bonding zone was formed when increasing bonding time and bonding temperature. The highest bonding strength was recorded at 17.44 MPa and average hardness was at 87.67 HV with the bonding time of 120 min and temperature at 540 °C. Statistically, the coefficient of determination analysis of bonding strength data was at 99.1%. View Full-Text
Keywords: Transient Liquid Phase Bonding; SSM7075 Aluminum alloys; ZA27 Zinc Alloy Transient Liquid Phase Bonding; SSM7075 Aluminum alloys; ZA27 Zinc Alloy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Meengam, C.; Dunyakul, Y.; Maunkhaw, D.; Chainarong, S. Transient Liquid Phase Bonding of Semi-Solid Metal 7075 Aluminum Alloy using ZA27 Zinc Alloy Interlayer. Metals 2018, 8, 637.

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