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Complex Investigation of the Mechanical Properties and Structural-Phase Composition of High-Strength Laser Welding Connections of the Aluminum Alloy 1420

机译:铝合金高强度激光焊接连接的力学性能和结构相组成的复杂研究1420

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The paper presents a series of experimental works for the optimization of the thermal post-treatment process (quenching and artificial ageing) of the laser welding joints of aluminum-lithium alloy 1420 (the system Al-Mg-Li) by the temperature and time characteristics, in order to find the breaking stress, yield limit and ultimate tensile strain approaching to the respective characteristics of the main alloy, or equal to them. Low-cycle tests have been done with the thermally-treated welding joints for the pulsing stretching at various loading amplitudes at the temperatures of-60, +20, +85°C. The surface structure of ruptured welding joints with and without thermal treatment has been studied after low cycle tests at various loading amplitudes at the increased and decreased temperatures.
机译:本文介绍了通过温度和时间特性优化铝 - 锂合金1420(系统Al-Mg-Li)的激光焊接接头的热后处理过程(淬火和人工老化)的一系列实验性工 ,为了找到断裂应力,产量极限和极限拉伸应变接近主合金的各自特性,或等于它们。 通过在60℃,+ 20℃,+ 85℃的温度下的各种装载幅度以各种装载幅度拉伸的脉冲拉伸的热处理焊接接头进行了低循环试验。 在增加和减少温度下的各种装载幅度下的低循环试验后,已经研究了具有和不具有热处理的破裂焊接接头的表面结构。

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