METALLURGICAL CHARACTERISTICS OF HIGH STRENGTH STRUCTURAL MATERIALS.
Abstract
A progress report covering research studies in high strength structural materials conducted in the period May 1965 to July 1965 is presented. The report includes fracture toughness studies on the 12% Ni maraging and 9Ni-4Co-.XXC steels, a variety of titanium alloy MIG, EB, and plasmarc weldments, and some aluminum alloys. The current fracture toughness index diagrams are presented for steels, titanium alloys, and aluminum alloys. Results are presented of (1) a study of the planestrain fracture toughness of the alloys Ti-6Al-4V and Ti-6Al-6V-2.5Sn over respective yield strength ranges of 130-140 ksi and 147-186 ksi; (2) heat-treatment studies on several titanium alloys; and (3) a low cycle fatigue crack propagation study of 5Ni-Cr-Mo-V steel in dry and wet environments in which considerable microcrack formation and growth was encountered. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1965
- Accession Number
- AD0625374
Entities
People
- D. G. Howe
- K. B. Lloyd
- P. P. Puzak
- R. W. Huber
- Robert J. Goode
Organizations
- United States Naval Research Laboratory