Lower Cost by Substituting Steel for Titanium.
Abstract
This program was part of an overall program to develop a high-strength steel, designated AF1410, which compares favorably with titanium in strength/weight efficiency and fatigue characteristics and yet can be produced at a significant reduction in cost. The Rockwell portion of the overall program consisted of selecting existing candidate designs, developing steel substitute designs, and comparing their estimated cost with their titanium counterparts. It also consisted of development of heat-treat processes to optimize machinability and of a comprehensive materials test program. Finally, the program included the machining of a full-scale test article from a forging provided by the Air Force from another portion of the program, and the fatigue, damage tolerance, and static residual strength testing of the full-scale article. In addition, validation of the production cost reduction was a prime objective. During testing, cracks developed which were subsequently analyzed as being the result of excessive deflections. An in-test repair was accomplished, and the testing was successfully completed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1978
- Accession Number
- ADA067997
Entities
People
- D. E. Parker
- G. V. Bennett
- R. P. Robelloto