Present proposed mechanisms for ageing-induced martensitic stabilization cannot explain why the amount of martensites losing reverse transformation ability (RTA) positively depended on M_s temperatures in directly-quenched CuZnAl alloys owing to dynamic ageing during the cooling process of quenching and subsequent slow heating. We proposed and confirmed that the number of vacancies at martensites boundaries (N_vmb) was the key factor controlling the occurrence of martensitic stabilization and its resulting RTA or loss in shape memory effect, not the number of vacancies inside the martensites and their long-range diffusion. All reported results can be rationalized by the positive dependence of original N_vmb on the M_s temperature.

目前提出的时效诱导马氏体稳定化机制无法解释为什么在淬火冷却过程和随后的缓慢加热过程中由于动态时效，马氏体失去反向转变能力 (RTA) 的量正依赖于直接淬火 CuZnAl 合金中的M _s温度。我们提出并证实了马氏体边界空位的数量 ( N _vmb ) 是控制马氏体稳定发生及其导致的 RTA 或形状记忆效应损失的关键因素，而不是马氏体内部空位的数量及其长程扩散。所有报告的结果都可以通过原始N _vmb对 M _s的正依赖性来合理化温度。