Plane strain static Ki c and dynamic, Kid measurements were obtained on threeinch-diameter titanium alloy extrusions which received a 5.9:1 reduction followed by air cooling. The alloys investigated were Ti-6Al-6V-2Sn, Ti-8Mo-8V-2Fe-3Al, and Ti-11.5Mo-6Zr-4,5Sn (Beta IIH. Compact tension specimens were used to obtain Ki c measurements and precracked standard Charpy V-notched specimens were used to obtain Kj^ measurements. The highest Ki c and KJJ values were obtained from the Beta III extrusion while the lowest Ki c and KIJ values were obtained for the Ti-8Mo-8V-2Fe-3Al extrusion. Good agreement was found to exist between Ki c values obtained from precracked Charpy V-notch specimens and compact tension specimens. (Author) fN*VMl47«5 OMOC.Tt ro« A«*Y UM.
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