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首页> 外文期刊>Journal of Materials Engineering and Performance >Research on Transient Liquid Phase Diffusion Bonding of Steel Sandwich Panels Under Small Plastic Deformation
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Research on Transient Liquid Phase Diffusion Bonding of Steel Sandwich Panels Under Small Plastic Deformation

机译：小塑性变形下钢夹芯板的瞬态液相扩散结合研究

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摘要

Plastic deformation was newly introduced in transient liquid phase (TLP) diffusion bonding of steel sandwich panels. The effect of plastic deformation on bonding strength was investigated through lab experiments. It was assumed that three factors, including newly generated metal surface area, deformation heat, and lattice distortion, contribute to the acceleration of interface atoms diffusion and increase of diffusion coefficients. A numerical model of isothermal solidification time was developed for TLP bonding process under plastic deformation and applied to carbon steel sandwich panels bonding with copper interlayer. A reasonable isothermal solidification time was obtained when an effective diffusion coefficient was used. Based on lab experiments, the effects of plastic deformation on interlayer film thickness and isothermal solidification time were studied through theoretical calculation with the new model. The evolution of interlayer film thickness indicates a good agreement between the calculation and experimental measurement. The results show that the isothermal solidification time is obviously reduced due to the effect of plastic deformation. Furthermore, a new steel sandwich cooling panel for heat exchanger was fabricated by TLP diffusion bonding under 13.1% plastic deformation. The test results suggest that a steel sandwich panel of inequidistant fin structure can provide enhanced heat transfer efficiency.
机译：在钢夹心板的瞬时液相（TLP）扩散粘结中新引入了塑性变形。通过实验室实验研究了塑性变形对粘结强度的影响。假定包括新产生的金属表面积，变形热和晶格畸变的三个因素有助于界面原子扩散的加速和扩散系数的增加。建立了塑性变形下TLP粘结过程的等温凝固时间数值模型，并应用于碳钢夹芯板与铜中间层的粘结。当使用有效扩散系数时，可获得合理的等温凝固时间。在实验室实验的基础上，利用新模型通过理论计算研究了塑性变形对中间膜厚度和等温凝固时间的影响。层间膜厚度的变化表明计算和实验测量之间有很好的一致性。结果表明，由于塑性变形的影响，等温凝固时间明显减少。此外，在13.1％的塑性变形下，通过TLP扩散粘结制造了一种新型的用于热交换器的钢夹芯冷却板。测试结果表明，等距翅片结构的钢夹芯板可以提供更高的传热效率。

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