Abstract: The forging technology using remained heat in castings is called casting -forging technology. The tensile strength and the elongation of the alloy 6061 treated by the technology increased by 47 % and 83 % separately. After a commecial pure aluminium has been processed by the casting- forging technology, the hardness increased by 18 % and the grain size decreased as compared with that added by Al-Ti-B master alloy.

Key words: Aluminium alloy, Casting -forging, Remained heat in casting