TD NiCr Fastener Development.
Abstract
Studies were performed to determine the effect of manufacturing variables on the strength of TD NiCr fasteners. Variables such as starting material condition, forging temperature, degree of deformation, configuration, recrystallization temperature and cold work between recrystallizations were evaluated first with respect to their effect on microstructure and then with respect to their effect on fastener properties. The properties measured include tensile and lap shear from room temperature to 2200 F, stress-rupture at 2000 F and 2200 F and stress-relaxation at 2000 F. No manufacturing sequence prevented head failure in forged tension bolts. Shear fasteners were produced which did not demonstrate a head critical condition and resulted in the anticipated optimum shear properties. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1972
- Accession Number
- AD0907149
Entities
People
- Thomas A. Roach
- William L. Wolf