This paper describes pre-treatment methods to improve the bake-hardening response of naturally aged AA6022(Al-0.6Mg-1.0Si),which is an alloy used in automotive body panels.These methods are used to accelerate the artificial aging process,which proceeds 30-day period of natural aging.The precipitation behavior of the sheets of this aluminum alloy was analyzed by differential scanning calorimetry(DSC) and electrical conductivity measurements,and subsequently confirmed by microstructure observations by transmission electron microscopy(TEM).Tensile tests and microhardness measurements were performed to determine the mechanical properties of the samples.Under simulated paint-baking conditions(30 min at 170 ℃),the microhardness and the yield strength(YS) of the pre-strained + pre-aged samples were found to be 113 HV and 225 MPa,respectively.These values are considerably higher than those of pre-aged samples,and they did not decrease significantly during the initial stage of artificial aging. This paper describes pre-treatment methods to improve the bake-hardening response of naturally aged AA6022 (Al-0.6Mg-1.0Si), which is an alloy used in automotive body panels. proceeds 30-day period of natural aging. The precipitation behavior of the sheets of this aluminum alloy was analyzed by differential scanning calorimetry (DSC) and electrical conductivity measurements, and confirmed by microstructure observations by transmission electron microscopy (TEM). Tensile tests and microhardness measurements were performed to determine the mechanical properties of the samples. UX simulated paint-baking conditions (30 min at 170 ° C), the microhardness and the yield strength (YS) of the pre-strained + pre-aged samples were found to be 113 HV and 225 MPa, respectively. These values ​​are relatively higher than those of pre-aged samples, and they did not decrease significantly during the initial stage of artificial agin g.