Accession Number : AD0291548

Title :   RESIDUAL STRESS IN HARDENED STEEL CYLINDERS

Corporate Author : FRANKFORD ARSENAL PHILADELPHIA PA PITMAN-DUNN RESEARCH LABS

Personal Author(s) : HESS,E.H.

Report Date : JUL 1962

Pagination or Media Count : 32

Abstract : A study was conducted to (1) measure residual stress in hardened steel solid cylinders, (2) correlate the stress values with heat treatments, and (3) develop a dissolution technique. Residual stress patterns for 12 solid cylinders of 4160 steel, heat treated by various methods, were determined. Comparison of the results was fair except for stress values near the center line and surface. An electrolytic method (the Mesnager-Sachs procedure) was used for enlarging holes in steel cylinders in order that the effect of bore metal removal could be detected as change in strain on the surface. With the view of preventing possible cracking in storage, it was concluded that (1) cylinders quenched in hot water had the most favorable stress pattern, (2) marquenched, and oil quenched cylinders had the next most favorable pattern, (3) residual stress in brine quenched cylinders approached the ultimate strength of the steel and in some instances caused cracking, and (4) stress patterns of interrupted quench specimens were not consistent enough to warrant a conclusion. (Author)

Descriptors :   *STEEL, CYLINDRICAL BODIES, ELECTROEROSIVE MACHINING, HARDNESS, HEAT TREATMENT, MEASUREMENT, SPARK MACHINING, STRAIN GAGES

Distribution Statement : APPROVED FOR PUBLIC RELEASE