Fabrication and characterisation of aluminium clad aluminium–copper alloy cored rod

Abstract

The Ohno continuous casting process was successfully applied to cast cored rod with Al–Cu alloy as a core material and Al as a clad material. Good metallurgical bonding was observed at the core/clad interface. Ultrasonic characterisation and pulse–echo measurements were performed to assess the suitability of the material as an acoustic buffer rod. Acoustic velocity profiles across the rod diameter and acoustic anisotropy were measured using a 225 MHz line focus beam scanning acoustic microscope. Longitudinal wave measurements with excellent signal/noise ratios were obtained.

MST/3154