The Hot Forming Flow Stress Characteristics Of6016Aluminum Alloy And Forming Fem Analysis

Due to the rapid development of the automobile industry, the performance of thecar, especially the required of fuel economy and pollution emissions continuouslyimprove, and the main way to effectively address these problems are reduce the vehicleweight. Aluminum alloy has a specific strength and stiffness, low density (accountingfor about one-third of the steel) features, it is suitable for automotive lightweightmaterial.6000series aluminum alloy has high strength, good plasticity, good corrosionresistance, mechanical properties and good at the same time heat treatment strengthenedalloy material, and therefore subject to wide attention from scholars at home andabroad.Take the thermal simulation compression test with homemade6016aluminumalloy at a temperature of420°C to-540°C, strain rate of0.001S-1and high temperaturetensile test at a temperature of460°C to540°C, the strain rate range of0.0001S-1. Thedifferent experimental conditions true stress-strain curve, and analysis of the flowstress with temperature and rate of changes in the law are gained, the6016aluminumalloy based on the constitutive equation of temperature and strain rate is established.Further analysis of the experimental data, draw the curve of the material yieldstrength, strain rate sensitivity index, elongation varies with the temperature and rate,the plastic formability better process conditions, and to study the possibility of plasticity.The compression and tension of a typical sample microstructure observed through amicroscope, scanning electron microscope, observe, and analyze its good formability ofthe internal mechanism of grain morphology, size, and dislocation motion, empty.The constitutive equation is fitted into forging simulation software DEFORM, carsteering section at different initial temperatures, forging speed, friction factor forgingforming process simulation, verification of process parameters on the formability of6016aluminum alloy, and6061aluminum alloy model formability of comparativeanalysis, to provide a theoretical basis for the6016aluminum alloy hot forming processparameters to develop.