Rosenstein, A. H.
Senior project engineerPersonal member ASTM, Naval Ship Research and Development Center, Annapolis, Md.
Asche, W. H.
MetallurgistPersonal member ASTM, Naval Ship Research and Development Center, Annapolis, Md.
Pages: 13 Published: Jan 1968
An investigation was undertaken of the time-temperature-embrittlement relationships of two high-strength quenched and tempered steels. Optimum stress-relief treatments were developed which incorporate the maximum reduction in residual stress accompanied by the minimum increase in transition temperature. It was determined that stress-relief embrittlement in Steel A (5Ni-Cr-Mo-V, 140 ksi yield strength) is most severe in the 900 to 1000 F temperature range, and that Steel B (3Ni-Cr-Mo, 100 ksi yield strength) is not significantly embrittled by stress relief. The optimum stress-relief treatments for Steels A and B are obtained by heat treatment at as high a stressrelieving temperature as possible. The maximum stress-relieving temperature is limited to that which will not result in loss of yield strength.
stress-relieving, temper embrittlement, high-strength steels, alloy steels, toughness, residual stress, heat treatment, tempering, evaluation
Paper ID: STP46474S