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首页> 外文期刊>Applied Surface Science >Correlation between surface tension and fatigue properties of Ti-6Al-4V alloy fabricated by EBM additive manufacturing
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Correlation between surface tension and fatigue properties of Ti-6Al-4V alloy fabricated by EBM additive manufacturing

机译：EBM增材制造的Ti-6Al-4V合金表面张力与疲劳性能的相关性

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摘要

The powder bed fusion method using a heat source for 3D printing can be applied to fabricate the geometrical shapes of some parts, and enables rapid melting and cooling. 3D EBM additive manufacturing can supply a near-net-shape or net-shape and precise parts better than micro scale casting and precision casting. Casting parts have residual stress in the matrix and their microstructure, which can affect the dynamic properties, but if they are heat-treated under the optimal conditions, the residual stress can be reduced to enhance the dynamic-mechanical properties of 3D printed parts. In this study, Ti-6Al-4V bulk bars were fabricated by EBM additive manufacturing, and the microstructures, residual stress, and various interior defects of the specimens were analyzed. The residual stress and surface tension were measured and calculated in different specimens heat-treated at 850-950 degrees C. The relationship between the residual stress and surface tension was explained using the related equations and the influence on the high cycle fatigue properties was evaluated.
机译：可以将使用热源进行3D打印的粉末床融合方法应用于制造某些零件的几何形状，并实现快速熔化和冷却。 3D EBM增材制造可提供比微型铸造和精密铸造更好的近净形或净形精密零件。铸件在基体及其微观结构中具有残余应力，这会影响动态性能，但是如果在最佳条件下对其进行热处理，则可以降低残余应力，从而增强3D打印部件的动态机械性能。在这项研究中，通过EBM增材制造制造Ti-6Al-4V块状钢筋，并分析了试样的显微组织，残余应力和各种内部缺陷。测量并计算在850-950℃下热处理的不同样品中的残余应力和表面张力。使用相关方程解释残余应力和表面张力之间的关系，并评估其对高循环疲劳性能的影响。

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