The forming behaviour of AW-7075-T6sheet was studied across a range of shock heat treatment(SHT)temperatures of200?480°C.After SHT,formability of the samples was investigated by tension and deep drawing tests at ...The forming behaviour of AW-7075-T6sheet was studied across a range of shock heat treatment(SHT)temperatures of200?480°C.After SHT,formability of the samples was investigated by tension and deep drawing tests at room temperature.Differential scanning calorimetry(DSC)was used to study the precipitation states of the AW-7075sheet in the as-received and shockheat treated conditions.Formability was started to improve with increasing shock heat treatment temperature from300°C onwards.Strain hardening resulted from the dissolution ofη′precipitates and the coarsening of remaining precipitates were found to contributeto the increase in formability at room temperature.Re-precipitation and coarsening of the precipitates were responsible for thepost-paint baking strength of SHT samples.展开更多
基金the Austrian Federal Ministry for Transport, Innovation and Technology (BMVIT) and the federal state of Upper Austria for funding this research work within the frame work of Independent research UF2015
文摘The forming behaviour of AW-7075-T6sheet was studied across a range of shock heat treatment(SHT)temperatures of200?480°C.After SHT,formability of the samples was investigated by tension and deep drawing tests at room temperature.Differential scanning calorimetry(DSC)was used to study the precipitation states of the AW-7075sheet in the as-received and shockheat treated conditions.Formability was started to improve with increasing shock heat treatment temperature from300°C onwards.Strain hardening resulted from the dissolution ofη′precipitates and the coarsening of remaining precipitates were found to contributeto the increase in formability at room temperature.Re-precipitation and coarsening of the precipitates were responsible for thepost-paint baking strength of SHT samples.
