Metals and Materials International

, Volume 18, Issue 1, pp 1–6 | Cite as

Growth of intermetallic phases in Al/Cu composites at various annealing temperatures during the ARB process

  • Chih-Chun Hsieh
  • Ming-Shou Shi
  • Weite Wu


The purpose of this study is to discuss the effect of annealing temperatures on growth of intermetallic phases in Al/Cu composites during the accumulative roll bonding (ARB) process. Pure Al (AA1100) and pure Cu (C11000) were stacked into layered structures at 8 cycles as annealed at 300 °C and 400 °C using the ARB technique. Microstructural results indicate that the necking of layered structures occur after 300 °C annealing. Intermetallic phases grow and form a smashed morphology of Al and Cu when annealed at 400 °C. From the XRD and EDS analysis results, the intermetallic phases of Al2Cu (θ) and Al4Cu92) formed over 6 cycles and the AlCu (η2) precipitated at 8 cycles after 300 °C annealing. Three phases (Al2Cu (θ), Al4Cu92), and AlCu (η2)) were formed over 2 cycles after 400 °C annealing.

Key words

composites annealing diffusion microstructure precipitation 


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Copyright information

© The Korean Institute of Metals and Materials and Springer Netherlands 2012

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringNational Chung Hsing UniversityTaichungTaiwan

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