This paper studied the dissimilar aluminum alloys (5082/6061) laser lap welding with different configurations. Two configurations were set up by exchanging the place position of the upper and lower plates under the same parameters. When higher Mg content alloy located as the upper plate. the evaporation of Mg led to the instable welding process and the lower actual heat input. https://fitnessgravesyardes.shop/product-category/brake-block/