The work studies the deformational effects in aged Cu–Al–Mn alloys. The martensitic transformation temperatures were determined by measuring the low-field magnetic susceptibility and electrical resistance as a function of the exposure time during isothermal ageing. The values of linear coefficients of thermal expansion of high and low-temperature phases were measured and the volume effect of martensitic transformation was estimated. Based on the uniaxial tension data, the phase diagram of austenite and martensite stability was constructed. The critical stress for the strain-induced martensite formation has been estimated and the factors influencing the degree of superelastic recovery have been elucidated. The influence of size effects on superelastic deformation behavior and the intervals of their occurrence in aged polycrystalline samples were noted.

这项工作研究了时效Cu–Al–Mn合金的变形效应。马氏体转变温度是通过测量低场磁化率和电阻随等温老化过程中暴露时间的变化而确定的。测量了高温和低温相的线性热膨胀系数值，并估计了马氏体相变的体积效应。基于单轴拉伸数据，建立了奥氏体和马氏体稳定性的相图。估计了应变诱发马氏体形成的临界应力，并阐明了影响超弹性回复程度的因素。