Metallurgical Examination of 2 Inch, 2-1/2 Inch, and 3 Inch Rolled Homogeneous Armor Employed in the Ballistic Evaluation of Armor against 57 mm and 90 mm ARmor-Piercing Projectiles
Abstract
A metallurgical examination including Brinell hardness surveys, fracture tests for fibre and soundness, and V-notch Charpy impact tests were made on 2 in, 2-1/2 in, and 3 in. thick rolled homogeneous armor. The plates were heat treated at Watertown Arsenal to hardnesses in the range of 280-400 Brinell and were ballistically tested at Aberdeen Proving Ground in order to determine the effect of thickness, hardness, and obliquity on the ballistic efficiency of rolled homogeneous armor against attack by 57 mm and 90 mm armor- piercing projectiles. Cross-sectional Brinell hardness tests have been made on each plate and averaged for use in correlating the results of ballistic tests with hardness. At the same time, the soundness and toughness of the plates have been evaluated and found to possess adequate metallurgical properties commensurate with their hardnesses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 24, 1949
- Accession Number
- ADA954806
Entities
People
- W. P. Hatch