低于一级淬火transition temperatures的三维非热马氏体的部分平衡
Partial Equilibration Scenario in 3D athermal martensites quenched below first-order transition temperatures
摘要：
为了测试Ritort及其同事的部分平衡情景（PES），我们对离散应变自旋模型进行了Monte Carlo模拟，用于淬火到低于一级转变的浴温$T <T_0$下的四个3D马氏体结构转变。在{ \it searches}中，老化系统面临着熵垒，在准微正则能量壳层之间寻找降低能量的通道。我们确认PES签名的指数尾部分布的间歇性热释放到浴，缩放在一个有效的温度，在我们的情况下，取决于淬火。当它的逆$β_{eff} (T) \equiv 1/T_{eff} (T) $在雪崩转变的“马氏体起始”温度$T_1$以下消失时，熵垒消失。当该搜索温度$T_{eff} (T)$消失时，PES冷却被阻止，因为熵垒发散。我们发现$T_{eff}(T)\sim T_d -T$的{ \it线性}消失，低于中间的延迟发散温度$T_d$，$T_1 < T_d < T_0$。因此，马氏体转换延迟$e^{1/T_{eff}} \sim e^{1/(T_d -T)}$具有类似Vogel-Fulcher-Tammann的发散。从模拟和非热马氏体合金中提取的淬火后延迟数据都与预测一致。
英文摘要：
To test a Partial Equilibration Scenario (PES) of Ritort and colleagues, we do Monte Carlo simulations of discretized-strain spin models, for four 3D martensitic structural transitions under quenches to a bath temperature $T <T_0$ below a first-order transition. The ageing system faces entropy barriers, in {\it searches} for energy-lowering passages between quasi-microcanonical energy shells. We confirm the PES signature of an exponential-tail distribution of intermittent heat releases to the bath, scaled in an effective temperature, that in our case, depends on the quench. When its inverse $β_{eff} (T) \equiv 1/T_{eff} (T) $ vanishes below a `martensite start' temperature $T_1$ of avalanche conversions, then entropy barriers vanish. When this search temperature $T_{eff} (T)$ vanishes, PES cooling is arrested, as entropy barriers diverge. We find a {\it linear} vanishing of $T_{eff}(T)\sim T_d -T$, below a delay-divergence temperature $T_d$ in between, $T_1 < T_d < T_0$. Martensitic conversion delays $e^{1/T_{eff}} \sim e^{1/(T_d -T)}$ thus have Vogel-Fulcher-Tammann like divergences. Post-quench delay data extracted from simulations and athermal martensitic alloys, are both consistent with predictions.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
