The disk is forged or made from {HEAD ~ hot isostatically pressed powder material} having {TAIL ~ properties} which are well matched to the temperatures and stresses encountered in the disk portion of the rotor 
The disk is forged or made from { HEAD ~ hot isostatically pressed powder material } having { TAIL ~ properties } which are well matched to the temperatures and stresses encountered in the disk portion of the rotor
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH