The Effect of Pretreatment and Homogenization on the Precipitation of Spherical Al3Zr Phase in Aluminium Alloy Containing Trace of Zr

Zhan Ying Guo; Gang Zhao; Yue Liu; Ni Tian

doi:10.4028/www.scientific.net/AMR.287-290.1140

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 287-290The Effect of Pretreatment and Homogenization on...

The Effect of Pretreatment and Homogenization on the Precipitation of Spherical Al₃Zr Phase in Aluminium Alloy Containing Trace of Zr

Abstract:

The number and size of the precipitation of spherical Al₃Zr particles, in aluminium alloy containing trace of Zr which subjected to different heat treatments, have been investigated by transmission electron microscopy. The results show that, the number of spherical Al₃Zr particles is determined by the pretreatment, and that the size is determined by the homogenization. The number of spherical Al₃Zr particles increases with prolonging the time of pretreatment between 0h to 48h and rising the temperature of pretreatment between 200°C to 400°C, and the size of spherical Al₃Zr particles turn out to be the same. The size of spherical Al₃Zr particles increases with prolonging the time of homogenization between 0h to 48h and rising the temperature of homogenization between 470°C to 500°C.