| Aluminum alloys has a serious of advantages in low density, high specific strength, corrosion resistance, and low cost. It hold irreplaceable position and good market prospect in aircraft industry, aerospace industry and automotive industry.As the aggravation of the worldwide energy crisis, the application of high-strength aluminum alloys in the automobile and aircraft has become a trend for the requirements of good fuel economy and save energy. The plastic of aluminum alloy is worse, so it has a high value in engineering to study the hot forming process which is an effective way for this issue.The paper focused on the study of hot formability of domestic 6016/6181 T4 which are produced in Southwest aluminum co., ltd. The main content has been shown here.The hot formability of the two kinds of aluminum alloys has been studied. The Hollomon equations of the two kinds of materials have been determined according to hot forming parameters which provide a mathematical model for the finite element simulation.The experimental setup of thermal forming limit has been designed according to the principle of changing in strain path. The forming limits of the two kinds of materials in various temperatures were obtained using tensile test and gas bulging which provided a criterion of instability for the finite element simulation.The synchronized cooling thermal forming technology on aluminum alloys has been researched and the strengthening effect has been analyzed. The initial law of the strengthening phase in the synchronized cooling thermal forming technology has been obtained. The technology is feasible in a certain condition which provides some references for the following research.
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