The kinetics of deformation processes on the yield plateau is studied in aluminum alloy 1550. It is found out that in the general case, the Lüders band fronts move discretely and only in the phase of specimen unloading. A continuous motion of the deformation fronts is possible if the relaxation rate of the applied stresses due to the test machine is higher than or equal to the rate of their decrease controlled by the internal processes at a lower scale level. The discrete motion of the Lüders fronts in the 1550 alloy suggests that they are not purely switching autowaves.

中文翻译：

---

FCC 合金中局部塑性自动波的特征

研究了铝合金 1550 屈服平台上的变形过程动力学。发现在一般情况下，Lüders 带前沿离散且仅在试样卸载阶段移动。如果由于试验机施加的应力的松弛率高于或等于由较低尺度水平的内部过程控制的下降率，则变形前沿的连续运动是可能的。1550 合金中 Lüders 前沿的离散运动表明它们不是纯粹的自动波。