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采用爆炸焊接法制备Fe/Al双金属复合管,为表征复合管界面的结合性能进行了压缩、压扁及压剪实验。实验结果表明,复合管结合良好,其界面强度大于纯铝层的抗剪强度,并且能够承受轴向和径向变形。利用扫描电子显微镜观察了原始界面形貌。测试结果表明,结合良好的复合管界面呈波状或直线状。采用液压胀形工艺以Fe/Al双金属复合管制备出复合管正三通,发现良好的界面结合对铁/铝双金属管的塑性成型具有重要作用。
The Fe / Al bimetallic composite pipe was prepared by explosive welding, and the compression, flattening and pressure-shear experiments were carried out to characterize the bonding performance of the composite pipe. The experimental results show that the composite pipe is well bonded, the interfacial strength is greater than the shear strength of the pure aluminum layer, and can withstand the axial and radial deformation. The morphology of the original interface was observed by scanning electron microscopy. The test results show that the combination of good composite pipe interface was wavy or straight. The hydroforming process was used to prepare composite pipe tee with Fe / Al bimetal composite pipe. It was found that good interfacial bonding plays an important role in the plastic forming of Fe / Al bimetallic pipe.