多材料装配的增材制造

Amela Kusuran, G. Darut, L. Vitu, M. Planche, D. Mercs
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引用次数: 0

摘要

这项工作的目的是将铝合金组装到钢中,以减少组装的最终质量。这样做,冷喷雾被认为是一个有效的解决方案。表面先前用纹理激光制备,以改善涂层在基材上的附着力。沉积层略粗糙(Ra < 10 μm),孔隙率小于1%,纹理表面附着力大于80 MPa。这些高数值也是由于孔洞的高填充率(钢为100%,铝合金为65%)。通过激光变形和冷喷涂组合的多材料装配得到的剪切值为90 MPa(在连接点300℃下进行3h热处理,机械强度提高3倍)。与激光焊接等线性连接方法(190 MPa)相比,该装配方法的单轴拉伸值明显较低(约为50 MPa)。这可以通过连接头的性质来解释,它是由铝合金制成的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Additive Manufacturing of Multi-Material Assembly
The objective of this work is to assemble an aluminum alloy to a steel to reduce the final mass of this assembly. Doing that, cold spray is considered as an efficient solution. Surfaces are previously prepared with a texturing laser to improve the adhesion of the coating on the substrate. Deposits are slightly rough (Ra < 10 μm), porosity is less than 1% and adhesion is higher than 80 MPa for textured surfaces. These high values are also due to the high filling rates in holes (100% for steel and 65% for aluminum alloy). Shear values obtained through the combination of laser texturing and cold spray for multi-material assembly are of 90 MPa (a heat treatment of 3h at 300°C applied on the joining point improves mechanical strength and increases it by three). By analogy with linear joining methods such as Laser Welding (190 MPa), the values obtained in uniaxial tension by this assembly method are significantly lower (around 50 MPa). It can be explained by the nature of the joining bead, which is made of aluminum alloy.
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