Abstract

The degradation of an AlMg6M alloy, which is used as the material of the bottoms of large tanks, during long-term operation is considered. The yield strength of the alloy increases, the plasticity decreases, and the impact toughness decreases in comparison with the same characteristics estimated after the annealing imitating the initial state of the material. The degradation of the mechanical properties is associated with structural changes, which is confirmed by the study of the microrelief of the fracture surfaces of alloy specimens.

中文翻译：

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长期运行过程中AlMg6M合金力学性能的下降

摘要

考虑到长期运行期间用作大型储罐底部材料的AlMg6M合金的降解。与退火模拟材料的初始状态后估计的相同特性相比，合金的屈服强度增加，塑性降低，冲击韧性降低。力学性能的下降与结构变化有关，这一点已通过对合金试样断裂表面的微浮雕的研究得到证实。