The Effect of HIPping on the Microstructure and Tensile Properties of Cast BTi-6554 Alloy
The effect of HIPping on the mechanical properties and microstructure of a cast Ti-6Cr-5Mo-5V-4Al alloy have been investigated. In the cast condition, the alloy predominantly consists of coarse β grains. In comparison to the HIPped samples, it exhibits poor mechanical properties, in particular low ductility, due to large amounts of remnant porosity. HIPping at 740°C substantially reduces the amount and size of porosity, while HIPping at 820°C and 900°C virtually eliminates all porosity, significantly improving the mechanical properties.
Hajo Dieringa, Norbert Hort and Karl Ulrich Kainer
Y. M. Wang et al., "The Effect of HIPping on the Microstructure and Tensile Properties of Cast BTi-6554 Alloy", Materials Science Forum, Vol. 690, pp. 33-36, 2011