J. Preußner, G. Rödler, F. G. Fischer, K. Hintz, V. Friedmann, A. Weisheit
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引用次数: 0
摘要
要实现部件的轻量化设计，需要采用高强度、低密度的材料。由于钙的密度低且含量丰富，铝贱金属与钙的合金具有潜在的兴趣。介绍了用增材制造al - 10wt .% Ca (Al-10Ca)合金致密无裂纹试样的方法。采用激光直接能量沉积(ed - lb)和激光粉末床熔融(LPBF)两种工艺制备样品材料。在LPBF中，为了获得无裂纹样品，需要对基体进行预热。显微组织分析显示为al - al4ca片层共晶。
Additive manufacturing of a lightweight Al-Ca alloy by direct energy deposition and laser powder bed fusion
Abstract High strength and low density materials are needed to achieve lightweight design of components. Aluminum base metals alloyed with calcium are of potential interest because of the low density of calcium and its abundance. The additive manufacturing of dense and crack free samples out of an Al-10 wt.% Ca (Al-10Ca) alloy is presented. Both laser-based direct energy deposition (DED-LB) and laser powder bed fusion (LPBF) processes were applied to manufacture sample material. Preheating of the substrate plate is needed in LPBF to receive crack free samples. An analysis of the microstructure shows an Al-Al 4 Ca lamellar eutectic.
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