论文部分内容阅读
基于EET理论和钛合金相变基本理论,以纯钛的同素异构转变温度为依据,在计算合金相最强键共价电子对数nA、组织中α相和β相的晶胞权重、α和β稳定元素对相变温度的影响、相修正系数及β稳定元素温度系数的基础上,给出一种从价电子结构层次计算α+β两相钛合金(α+β)/β转变温度的方法。据此,计算Ti-4.5Al-5Mo-1.5Cr合金的(α+β)/β转变温度,理论计算值为945.48℃,实测值为925℃,理论计算值与实测值相对误差为2.21%。
Based on the theory of EET and the basic theory of phase transition of titanium alloy, based on the allothermal transformation temperature of pure titanium, the unit cell weight of the α phase and the β phase in the alloy is calculated by calculating the covalent electron logarithm nA of the strongest bond in the alloy phase, α Based on the effect of β stabilizing element on the phase transition temperature, the phase correction factor and the temperature coefficient of β stabilizing element, a (α + β) / β transition temperature Methods. Therefore, the calculated (α + β) / β transition temperature of Ti-4.5Al-5Mo-1.5Cr alloy is 945.48 ℃. The measured value is 925 ℃. The relative error between theoretical value and measured value is 2.21%.