MATERIAL - DESIGN STUDY OF BRAZED R.S. 140 TITANIUM SANDWICH FOR B-58
Abstract
A study was made to evaluate the effects of processing variables and material variables on brazed RS-140 Ti alloy structures. One nacelle and one elevon panel were brazed for installation on B-58 A/P 28 for ground test purposes. They were 100% acceptable before and after the complete schedule of testing. The following findings are reported: (1) a new, nearly ideal stop-off (anti-braze) for Ti alloys was developed, (2) the optimum brazing temperature for Dynabraze B was 1650 F, (3) Dynabraze B had no appreciable effect on the tensile strength of 0.010-in.-thick RS140 Ti alloy, but caused a reduction in elongation, (4) material in the cold rolled condition prior to brazing, produced panels with the highest mechanical properties, (5) the faster brazing cycle made possible with Cu, rather than graphite fixturing, resulted in an 8% increase in strength, and the brazing cycle was shortened from 80 to 25 min for a 13- x 25-in. panel, and (6) the composite of RS-140 Ti alloy skins with 17-7 PH stainless steel core was feasible. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 15, 1962
- Accession Number
- AD0272260
Entities
People
- W.t. Kaarlela
Organizations
- General Dynamics