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Study of magnesium and aluminum alloys absorption coefficient during Nd : YAG laser interaction

机译:Nd:YAG激光相互作用中镁和铝合金吸收系数的研究。

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In laser processes, the absorption factor of laser Nd:YAG by metals plays a very important role. In order to model laser welding, we need to know its evolution during the process. The theoretical calculation does not enable the prediction of the absorption factor in the case of a keyhole mode. It is difficult to predict the effect of plasma and recoil pressure on the shape of the keyhole. In this paper, an integrating sphere is used to determine the absorption factor during the laser process, which is carried out on two types of magnesium alloys (WE43 and RZ5) and an aluminum alloy. We obtain the evolution in time of the absorption factor according to different steps of the evolution of the keyhole. (c) 2006 Elsevier B.V. All rights reserved.
机译:在激光加工中,金属对Nd:YAG激光的吸收因子起着非常重要的作用。为了模拟激光焊接,我们需要知道其在过程中的演变。在匙孔模式下,理论计算无法预测吸收系数。很难预测等离子体和反冲压力对锁孔形状的影响。在本文中,使用积分球确定激光加工过程中的吸收系数,该积分球是在两种类型的镁合金(WE43和RZ5)和铝合金上进行的。我们根据钥匙孔演变的不同步骤获得吸收因子随时间的演变。 (c)2006 Elsevier B.V.保留所有权利。

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