Formability And Hydro-mechanical Deep Drawing Experiment Of 5083 Aluminum Alloy Sheet

5083 aluminum alloy is widely applied in such fields as aircrafts, vessels, automobiles, and petrochemical engineering owing to its good corrosion resistance, weldability, and workability. In the present study, the formability and hydro-mechanical deep drawing process of 5083 aluminum alloy sheets were systematically studied, and some main conclusions were summarized as follows:Firstly, based on the uniaxial tensile test, the basic formability parameters of 5083 aluminum alloy from 24 ? to 250 ? were obtained for the investigation of constitutive equation. The simulated formability parameters of 5083 aluminum alloy sheets were acquired with the average flexural strength(?f) of 363.62 MPa, cupping value(IE) reaching 7.90 mm, and cone cup value(CCV) of 1 mm-thick 5083 aluminum alloy sheet up to 41.86 mm. While cupping value(IE) and earring ratio(Ze) of 2 mm-thick 5083 aluminum alloy sheet were 10.93 mm and 3.75, respectively.Secondly, the forming limit diagram and mathematical model of 5083 aluminum alloy under different temperatures from 24? to 250? were further investigated according to the results obtained via forming limit experiment. Furthermore, Functional relationships between temperature and parameters of the simulation model including F0, a, and b were obtained by fitting calculation, laying the foundation for the prediction of forming limit diagram of 5083 aluminum alloy under different temperatures.Finally, the influences of chamber pressure, blank-holder gap, friction coefficient, and pressure loading curve on the forming quality were analyzed by numerical simulation of the hydro-mechanical deep drawing process of 5083 aluminum alloy sheet. Hydro-mechanical deep drawing process of shaped cup under room temperature and the forming experiments of cup shell under the different temperatures and chamber pressures were also conducted. The results indicated that hydraulic loading facilitated the fitting of metal sheets onto the punch, further improving the formability ofmaterials. Moreover, limit drawing ratio of metal sheet increased with the growing forming temperature under the same chamber pressure, demonstrating the formability of 5083 aluminum alloy sheet being better under warm conditions rather than room temperature.