Microstructure and Properties of LY12M Aluminium Alloy Plate after Synchronized Cooling Thermal Tension

The experiment of synchronized cooling thermal tension was carried out to LY12M aluminium alloy,then it was followed by solution and aging treatment.The microstructure and mechanical properties were studied by using optical microscopy and tensile test.The results show that the strengthening phase of the LY12M alloy had small size and dispersed uniformly after synchronized cooling thermal tension and solution-aging treatment.The tensile strength and the yield strength both increased by 150%-200%.The strengthening effect of the material with a long solution holding time was good.The synchronized cooling thermal forming process was also suitable for aluminum alloy.