Processing and Ballistic Evaluation of Dual-Hardness Titanium Armor
Abstract
A program to demonstrate the potential of dual-hardness titanium alloy armor for defeating small-caliber armor-piercing threats was conducted. The armor consisted of either a Ti-3Si-3Fe-0.5N or a Ti-3Si-2Fe-3Mo-0.75 front- face alloy diffusion/roll-bonded to a Ti-7Al-2.5Mo back-face alloy. The plates were heat-treated to a hardness level of R sub c 54-59 on the surface of the front face and to R sub c 39-43 on the back face. Screening studies of alloy compositions leading to the selection of the two different front-face alloys are discussed. A materials and process improvement study is described that is designed to improve bond-line strength and overall ballistic performance of the dual-hardness composite. Results of a ballistic evaluation study conducted with 30-cal AP projectiles to determine the effect of variable front-to-rear thickness ratios for areal densities of 6, 8, 10, and 12 lb/sq ft are presented. Performance in ballistic tests is correlated with alloy hardness, composition, structure, thickness ratios and areal densities to assess the overall potential of the dual-hardness titanium armor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1974
- Accession Number
- AD0777809
Entities
People
- Elliott H. Rennhack
- Roger A. Perkins
Organizations
- Lockheed Martin Missiles and Space