TTP curves of 6061 aluminum alloy

Through the TTP curves of 6061 aluminum alloy evaluated by interrupted quenching method,the quench factor during the critical temperature range was calculated.With the quench factor analysis method,the hardness of the alloy was predicted in conditions of different cooling rate and compared with the measured values.The results show that the nose temperature of TTP curves is 340 ℃ and the critical temperature range is 220-455 ℃.The predicted results agree reasonably well with the measured values.The quench factor analysis method has high accuracy of predicting alloy property.The cooling rate in the critical temperature range of 220-455 ℃ should be more than 16.2 ℃/s,so that the hardness of alloy will attain above 95% of the maximum hardness.