DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
AD0645937
Title:
TI-6AL-2CB-1TA-0.8MO TITANIUM ALLOY AS A STRUCTURAL MATERIAL FOR MARINE APPLICATIONS.
Descriptive Note:
Phase rept.,
Corporate Author:
NAVY MARINE ENGINEERING LAB ANNAPOLIS MD
Report Date:
1967-01-01
Pagination or Media Count:
49.0
Abstract:
A sea-water, stress-corrosion-resistant compositional variation of Ti-7Al-2Cb-1Ta, Ti-6Al-2Cb-1Ta-0.8Mo, has been developed and evaluated as a candidate pressure-hull material. Thick plate produced from pilot heats and production heats of the alloy were found to have good toughness and to be resistant to sea-water stress corrosion and corrosion fatigue. Properties of weldments of the alloy were found to be as good as the base metal and free from sea-water stress corrosion in the as-welded and stress-relieved conditions. A production heat of Ti-6Al-2Cb-1Ta-0.8Mo was evaluated in tension, compression, Charpy V-notch impact, sea-water stress corrosion, low-cycle fatigue, high-cycle fatigue, Bauschinger effect, and stress relaxation. The alloy has a tensile yield strength of 100 ksi in 1-inch thickness and 96 ksi in 2.5-inch thickness. Preliminary data from processing and heat treatment investigations in progress indicate the strength can be raised approximately 5 ksi. The Ti-6A1-2Cb-1Ta-0.8Mo alloy is considered suitable for use as a weldable, high-toughness structural metal for marine applications. Author
Distribution Statement:
APPROVED FOR PUBLIC RELEASE