Effect of Quenching Rate on Microstructure and Properties of Aluminum Alloys with Different Compositions
The effect of quenching rate on microstructure,mechanical properties,electrical conductivity and hardness of 6060 and 6061 aluminum alloy were studied.The quenching rate of 6060 and 6061 alumi-num alloy was 393.24 and 519.06 ℃/min,respectively.The experimental results showed that the grain size of 6061 aluminum alloy was larger than 6060 aluminum alloy,while the yield strength,tensile strength and Vickers hardness were higher than those of 6060 aluminum alloy,but the electrical conductivity was lower than that of 6060 aluminum alloy.The elongation of 6061 aluminum alloy in T4 state was lower than that of 6060 aluminum alloy,and the elongation in T6 state was the same.The quenching rate had a signif-icant impact on the microstructure and properties of aluminum alloys,and the quenching sensitivity of 6061 aluminum alloy was higher than that of 6060 aluminum alloy.
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