This is because the big difference between the base aluminum alloy and the inclusions in the weld as well as the second phase particles in the heat affected zone.The thermal cyc...

• 这是由于焊接热影响区中的聚集、析出第二相粒子的热膨胀系数与铝合金母材相差很大,热循环造成了基体与第二相之间的脱离,导致接头性能劣化和断裂机理的改变。