Accession Number : ADA954305

Title :   Metallurgical Examination of 4 Inch-6 Inch Thick Cast Armor.

Descriptive Note : Final rept.,

Corporate Author : WATERTOWN ARSENAL LABS MA

Personal Author(s) : Yoffa,M. ; Reed,E. L.

Report Date : 15 DEC 1944

Pagination or Media Count : 11

Abstract : Ten samples of cast armor varying in thickness from 4 in.-6 in,tested as part of Ordnance Research Center Project 3780(328-AM3-304) for the development of specifications for 4 in., 5 in., and 6 in. thick cast armor, were subjected to a metallurgical examination including fibre fracture test, hardness surveys, microscopic examination, and chemical analyses. In general, crystallinity in the samples was due to temper brittleness resulting from a slow cooling rate from the tempering temperature and also to slack quenching. Satisfactory 4 in.-6 in. thick armor of the compositions investigated has been fabricated with fibrous fractures and good impact values at 200-215 Brinell hardness. (Author)

Descriptors :   ARMOR, BRITTLENESS, CASTINGS, CHEMICAL ANALYSIS, FIBERS, FRACTURE(MECHANICS), HARDNESS, METALLURGY, QUENCHING, SPECIFICATIONS, SURVEYS, TEMPERATURE, TEMPERING, THICKNESS

Subject Categories : Mfg & Industrial Eng & Control of Product Sys
      Armor

Distribution Statement : APPROVED FOR PUBLIC RELEASE