Abstract
Hot plane strain compression testing is shown to be more suitable than hot torsion testing in providing flow stress data for partially consolidated aluminium 2014 powder which forms the matrix of many advanced composites. It is demonstrated that data provided by this technique are comparable to hot torsion data by the use of a solid control alloy. Activation energies and constitutive equation constants are derived from the data for use in analytical process models. It is proposed that this method of testing provides an extremely useful way of monitoring the flow behaviour of powder based materials that are not amenable to other test methods
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