RESEARCH AND DEVELOPMENT OF TITANIUM ROCKET MOTOR CASE. VOLUME I. FORGING OF FRONT AND REAR CLOSURES.
Abstract
Subscale and full scale rocket motor case closures were forged to develop economical fabrication techniques which would produce forgings with consistently high strength levels. Forgings were intended to meet a design requirement of a 180,000 psi minimum yield strength level with 4% minimum elongation. Initial evaluation of the effects of oxygen indicated that contents between 0.11 and 0.17 weight per cent were acceptable. Evaluation of full scale forgings indicated, however, that parts with oxygen contents below 0.12% were not capable of attaining the 180,000 to 200,000 psi yield strength level throughout with adequate ductility, and therefore it is recommended that forgings of B-120 VCA titanium alloy contain a minimum of 0.12, a maximum of 0.17, and a nominal 0.14 weight per cent oxygen. The maximum value was established on the basis of ductility deterioration. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 31, 1963
- Accession Number
- AD0438815
Entities
People
- L. Godfrey
- R. Makowski
Organizations
- Pratt & Whitney