Material Properties of Various Light Metals Produced by Heated Mold Continuous Casting
Keywords:
aluminum alloy, ultrasonic vibration, continuous casting, mechanical property, microstructural characteristicAbstract
In the present work, an attempt was made to develop high quality cast aluminum alloys via a new casting technology, e.g., the heated mold continuous casting (HMC) with ultrasonic vibration (UV) process. With the UV process in the continuous casting process, fine and spherical grains were obtained, where the lattice structure is formed similarly before the UV process while dislocation density increases. The mechanical properties of the UV-HMC Al alloys are higher than those for the related cast Al alloys without UV although still high material ductility is obtained. The lattice and dislocation characteristics of the continuous cast samples made with and without the UV processes were analyzed systematically by the EBSD observations to interrupt clearly
their mechanical properties.
References
[1] C Vivès, Effects of forced electromagnetic vibrations during the solidification of aluminum alloys: Part II. Solidification in the
presence of collinear variable and stationary magnetic fields, Metall. Mater. Trans. B, 27B(1996)457–464.
[2] M.K. Aghayani, B. Niroumand, Effects of ultrasonic treatment on microstructure and tensile strength of AZ91 magnesium alloy,
J. Alloys Compd. 509(2011)114–122.
[3] H.K. Feng, S.R. Yu, Y.L. Li, L.Y. Gong, Effect of ultrasonic treatment on microstructures of hypereutectic Al-Si alloy, J. Mater. Process. Technol. 208(2008)330–335.
