Evaluation of Yttriated Titanium 6Al-4V Plates and Forgings
Abstract
This program evaluated the effects of yttrium additions to titanium 6Al-4V alloy by means of mechanical property testing and metallurgical studies. Product forms evaluated which contained yttria (yttrium oxide) included hand forgings, die forgings, and plate material which were compared to baseline plate material which had no yttria additions. The summary of results of the mechanical property evaluations are presented below. Certain heats and specimens did appear as outliers from the norm and these have been noted. Metallographic evaluations of the yttriated material demonstrated the yttria particles are readily observable by optical and scanning electron microscopy. Fracture surface analysis on the failed fatigue and tensile specimens did not establish a direct correlation between specimen performance and yttria particles or clusters. These results indicate the effects of yttria additions are indirect and more subtle, and that the variations in data are more likely to be a consequence of the differences in mill processing procedures due to the greater hot workability of the yttriated titanium.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1979
- Accession Number
- ADA072439
Entities
People
- A. E. Gunderson
- R. F. Geisendorfer
Organizations
- Air Force Research Laboratory