1. solid solution strengthening

Adding alloying elements to pure aluminum can form aluminum-based solid solution, cause lattice distortion, hinder dislocation movement, play a role in solid solution strengthening and improve its strength. According to the general law of alloying, when infinite solid solution or high concentration solid solution alloy is formed, not only high strength can be obtained, but also excellent plasticity and good pressure workability of Al-Si can be obtained. Al-Cu, Al-Mg, Al-Si, Al-Zn, Al-Zn, Al-Zn, Al-Zn, Al-Zn, Al-Zn.

2. Aging strengthening

Another strengthening effect of alloying elements on aluminum is realized by heat treatment. However, because aluminum has no isomorphic transformation, its heat treatment phase transformation is different from that of steel. Heat treatment strengthening of aluminum alloy,