High Temperature Compression Studies of a 6082.50 Aluminium Alloy using Deformation Dilatometer

Data recorded in uniaxial compression for a 6082.50 aluminium alloy deformed at temperatures of 490C, 520C and 560C, at strain rates of 10, 1, and 0.1 s-1, to 50% height reduction, using TA Instruments DIL 805 A/D/T Quenching and Deformation Dilatometer. The cylindrical samples measured 5 mm diameter and 10 mm height. The 6082.50 aluminium specimens were machined from an as-cast billet. Two homogenisation have been performed on this material, one at 590C for 8h and one at 520C for 2h. These are identified as homogenisation 1 and homogenisation 2 in the data. Al2O3 platens were used for all tests, with Mo discs superglued at both ends of the sample to maximise thermal contact. Tests were conducted in an inert He gas atmosphere under a vacuum of 1e-5 mbar. The temperature was controlled using an K-Type thermocouple spot-welded to the centre of the samples with another K-Type thermocouple welded halfway between the centre and end to measure the thermal gradient. Not all of these second thermocouples provided data due to breakages. 

Data recorded at high acquisition frequency during deformation is stored in the 'data_deformation' folder and saved with the format: ' test number (002 to 038)_Compression_Daniel_Al_(homogenisation treatment - see above)_SHT_540C_Deform_(Deformation temperature)_(deformation strain rate)_QuenchHeGas__1. Here SHT_540C refers to the solutionising treatment and QuenchHeGas__1 refers to the method of cooling after deformation. This dataset does not include readings from the off-centre thermocouple. Data in the 'data_basic' folder is recorded at a lower acquisition frequency but includes a recording of the entire thermomechanical cycle, including both heating and cooling stages, as well as deformation. The 'method' folder includes contains the temperature and deformation profiles used. 'pictures' includes images taken of the samples and set up during the experiment.