A study of stress-rupture and ductility properties of thin laminae composites

It is shown that, by rolling, tungsten-tantalum laminar composites can be reduced in thickness as much as 90 to 1, with a resulting improvement in strength of nearly 66%. Further reductions in laminar thickness are believed to be possible with further increases in the strength of the composite material. The rolled tungsten-tantalum laminar material shows also a remarkable low-temperature ductility, sustaining a 3-T bend at room temperature without incurring macrodamage.