High Toughness Titanium Alloy Development.
Abstract
The goals of this program were to develop titanium alloy(s) having fracture toughness/strength characteristics which, in combination, exceeded the properties of current commercially available alloys. The goal properties were a tensile strength (UTS) of 135 ksi at a toughness of 100 ksi in. and/or UTS of 170 ksi with a toughness of 80 ksi in. This effort consisted of two consecutive phases. Phase I included the preparation and evaluation of twenty pound heats of twenty different alloy compositions and five pound heats of two additional alloy compositions, in order to select one or two compositions having the potential of achieving the contract strength-toughness goals. Phase II included a scale-up of the two alloys (Ti 5Mo 4.5Al 1.5Cr and Ti 8Mo 2.5Al 1.5Cr) selected from Phase I to larger (500 pound) ingots. These larger ingots were then processed through a variety of processing sequences designed to produce a range of microstructures and properties. Extensive property evaluations were then performed on several microstructural conditions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1974
- Accession Number
- ADA001381
Entities
People
- C. G. Rhodes
- F. H. Froes
- J. C. Chesnutt
- J. C. Williams
- R. G. Berryman