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以膨胀及金相测定确立了Cu-Zn-Al合金由马氏体态加热和经高温母相冷却时,其贝氏体形成的TTT图和动力学曲线.证明贝氏体相变的动力学特征符合Austin-Rickett方程,由马氏体加热形成贝氏体时n值为2.25,经高温冷却时n为1.80;形成贝氏体的激活能约为110kJ·mol~(-1),与溶质原子的扩散激活能相当.
The TTT diagrams and kinetic curves of the bainite formed when the Cu-Zn-Al alloy was heated from the martensite and cooled by the high-temperature matrix were established by the expansion and metallographic measurements. The kinetic characteristics of the bainite transformation According to the Austin-Rickett equation, the value of n is 2.25 when bainite is formed by the heating of martensite and 1.80 by cooling at high temperature. The activation energy of formation of bainite is about 110 kJ · mol -1, The proliferation of activation energy quite.