As the development of the large size plate of ultra-highstrength aluminum alloy, many advanced spray quenching processes have sprung up, such as rolletype spray quenching process [10–12]. And this provides a basis for the diversified development of the quenching technology. So far, the researches about the quenching processes were mainly focus on single-stage quenching. Grum et al. [13] investigated the influence of quenching process parameters on residual stresses. Newkirk and MacKenzie [14] re- ported the characteristics of the microstructure and properties of
7050 aluminum alloy and 7075 aluminum alloy in the Jominy end quench tests. Based on this test method, Dolan et al. [15]