Within the framework of this study, the 1050A/AZ31 round bimetal bars were produced by the explosive cladding method and subsequent groove rolling process. LM/SEM investigation shown that by proper selection of the explosive cladding parameters (mainly initial distance between 1050A tube and AZ31 core and detonation velocity) it is possible to produce 1050A/AZ31 feedstocks without a continuous layer of Mg–Al intermetallic phases on the interface between joined materials. The experimental tests of the groove rolling process of 1050A/AZ31 bars were supplemented with a theoretical analysis using FEM-based numerical modelling. Based on the test results obtained, it was found that the interface of the 1050A/AZ31 bar rolling at a temperature (300 °C) was characterized by the generation of a thin continuous intermetallic layer without cracks. Applying a higher rolling temperature of 400 °C, which is usually used in hot forming processes of Mg alloys, led to the production of a thicker intermetallic layer, which cracked during the rolling process as a result of deformation. Strength of the fabricated bimetal joints was high, they did not delaminate during shear tests.

中文翻译：

---

爆炸熔覆和随后的滚轧工艺生产的1050A / AZ31双金属棒的组织和性能

在这项研究的框架内，通过爆炸包层法和随后的沟槽轧制工艺生产了1050A / AZ31圆形双金属棒。所示LM / SEM调查由爆炸复合参数（1050A管和AZ31芯和爆速之间主要初始距离）的适当选择，可以产生1050A / AZ31原料不含Mg-Al系金属间相的界面上的连续层连接材料之间。使用基于FEM的数值模型对理论进行了补充，从而补充了1050A / AZ31钢筋的沟槽轧制过程的实验测试。根据获得的测试结果，发现在温度（300°C）下轧制的1050A / AZ31棒材的界面的特征是连续薄金属间层的产生而没有裂纹。通常在Mg合金的热成型工艺中使用较高的轧制温度400°C，导致产生较厚的金属间化合物层，该金属间化合物层在轧制过程中由于变形而破裂。制成的双金属接头的强度很高，在剪切试验期间它们不会分层。