The results show that, with the quenching temperature (270~380℃) increasing, the carbon content and percentage content of retained austenite increase first and then decrease, which are up to a maximum value at 360℃; the tensile strength of ADI decreases;
The results show that, with the quenching temperature (270~380℃) increasing, the carbon content and percentage content of retained austenite increase first and then decrease, which are up to a maximum value at 360℃; the tensile strength of ADI decreases;
结果表明，在试验温度范围内(270~380℃)，试样中残余奥氏体的含碳量及其含量随着等温淬火温度的升高先增大后减小，均在360℃等温淬火时出现最大值；抗拉强度随着等温淬火温度的升高而逐渐降低；伸长率和冲击韧度随着等温淬火温度的升高先增大后减小，在360℃等温淬火时出现最大值；硬度则随着等温淬火温度的升高先减小后增大，当360℃温淬火时硬度最低。