• Ying Liu, Wei Li, Yuan-yuan Li. Microstructure and mechanical properties of ZE10 magnesium alloy prepared by equal channel angular pressing. International Journal of Minerals, Metallurgy and Materials, 2009, 16 (5): 559-563
  • 发布时间:2014-04-03   阅读:126
  •     Abstract:ZE10 magnesium alloy was subjected to equal-channel angular pressing (ECAP) up to 12 passes in a die with an angle of 120° between the two channels at 250–300°C. An inhomogeneous microstructure of bimodal grains including fine grains of 1–2 μm as well as coarse grains of about 20 μm was obtained after the initial 1–4 ECAP passes. The grain size became increasingly homogeneous with further ECAP processing and the grains were significantly refined to 1–2 μm after 8 passes and further refined to 0.5–1 μm after 12 passes. The alloy's yield strength changed slightly but the ductility improved greatly initially up to 4–6 passes corresponding to the bimodal grain microstructure. And after the subsequent pressing of more than 8 passes, the tensile strength including yield strength improved while the elongation decreased gradually.