High-toughness titanium alloy development. Final engineering report Jan 1975--May 1976
This is the final engineering report for a Naval Air Systems Command sponsored program to evaluate the forgeability characteristics of CORONA-5, a new titanium alloy with a nominal composition of Ti--4.5Al--5Mo--1.5Cr. The goal of this contract was to define forging and final heat treat parameters which would produce optimum or near-optimum toughness over the strength range of 130--140 ksi (about 900--965 MPa), UTS. During this program, a total of six different forging sequences were evaluated to identify effects of varying degrees of alpha/beta working on resultant microstructures and attendant mechanical properties. In addition, two different final heat treat cycles were employed to provide strength variations over the goal range. The results of these evaluations indicated that the best combinations of strength and toughness were produced by forging the material above its beta transus or at temperatures high in the alpha plus beta region. (GRA)
- Research Organization:
- Rockwell International Corp., Los Angeles, CA (USA). Los Angeles Aircraft Div.
- OSTI ID:
- 7216985
- Report Number(s):
- AD-A-030274; TFD-76-471
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of microstructure and yield strength on the fracture behavior of Ti-4. 5 Al-5Mo-1. 5Cr (CORONA-5)
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Related Subjects
360101* -- Metals & Alloys-- Preparation & Fabrication
ALLOY SYSTEMS
ALLOYS
ALUMINIUM ALLOYS
CHROMIUM ALLOYS
CRYSTAL STRUCTURE
FABRICATION
FORGING
HEAT TREATMENTS
MATERIALS WORKING
MECHANICAL PROPERTIES
MICROSTRUCTURE
MOLYBDENUM ALLOYS
QUATERNARY ALLOY SYSTEMS
TENSILE PROPERTIES
TITANIUM ALLOYS
TITANIUM BASE ALLOYS