Microstructure evolution of semi-solid copper alloy billet during uniaxial compression

The compression deformation experiments of semi-solid ZCuSn10 copper alloy billet prepared by SIMA (strain induced melt activation) process were carried out by using Gleeble-1500 thermo-mechanical simulator test. The experimental results show that the deformation resistance of the semisolid simples prepared by SIMA method is half of as-cast ZCuSn10 copper alloy. The liquid phase rate of semi-solid sample before and after compression is 19.4% and 8.1%, respectively. Compression test under different strain, strain rate and temperature, the liquid-solid separation phenomenon occurs in transition region of the semi-solid ZCuSn10 copper alloy sample. And liquid-solid separation occurs entirely in the central region. The greater the strain is, the less liquid content of the semi-solid copper alloy compression ZCuSn10 central part of the samples. The liquid content increases with increasing temperature, and increases with increasing strain rate. © 2016, Science Press. All right reserved.