【摘要】 通过差示扫描量热技术研究了加热速率对CuAlBe形状记忆合金的相变特征的影响。结果表明:在不同加热速率下的相变点在一个区域内变化。快速加热使两个相变峰靠近,随着加热速率的降低,两个相变峰逐渐分离。用超低降温速率法分离后的DSC曲线,右端的大峰变成一连串由许多微区依次发生马氏体逆相变所产生的许多小的放热峰。更多还原

【Abstract】 The effects of heating rates on phase transformation of CuAlBe shape memory alloy were investigated by differential scanning calorimetry. It shows that phase transformation temperature at different heating rates changes in a region. Two transformation peaks are close under rapid heating, with the decrease of heating rate, two peaks are separated gradually. The DSC curves were separated by ultralow temperature reduction rate method, the right big peak convertes to a succession of many exothermic small peaks produced by reverse martensitic transformation.更多还原