Investigations of the structure and properties of two groups of Al–Mg alloy samples produced by 3D technologies are carried out. Tests up to failure are carried out under conditions of uniaxial tension of proportional flat specimens. Before testing, one of the groups of samples is irradiated with a pulsed electron beam in the mode of melting a thin (up to 45 μm) surface layer. The intermittent nature of the deformation of both batches of samples is revealed, which manifests itself in the formation of teeth on the deformation curves. It is shown that the samples of Al–Mg alloy treated with a pulsed electron beam demonstrate a higher repeatability of the properties under tensile deformation as compared to the samples of the initial alloy. It is found that the destruction of the samples proceeds by the mechanism of ductile fracture. It is found that the deformation of samples irradiated with a pulsed electron beam is accompanied by brittle destruction of the modified surface layer.

3D制备两组Al-Mg合金样品的组织和性能研究技术进行。在成比例的扁平试样的单轴拉伸条件下进行直至失效的试验。在测试之前，用脉冲电子束以熔化薄（高达 45 μm）表面层的模式照射其中一组样品。揭示了两批样品变形的间歇性，这表现在变形曲线上的齿的形成。结果表明，与初始合金样品相比，用脉冲电子束处理的 Al-Mg 合金样品在拉伸变形下表现出更高的性能重复性。发现样品的破坏是通过韧性断裂的机制进行的。