- Author
- Early, J. G.
- Title
- Elevated-Temperature Mechanical Behavior of a Carbon-Manganese Pressure Vessel Steel.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Journal
- Journal of Engineering Materials and Technology, Vol. 99, 359-365, October 1977
- Keywords
- steels | pressure vessels
- Abstract
- The short-time effects of stress and temperature on the mechanical properties of a carbon-manganese pressure vessel steel were investigated using room- and elevated-temperature tensile tests and short-time creep-rupture tests. The tensile tests results indicated that strain aging effects were not significant in the temperature range 593 to 677 C (1100 to 1250 F). Analysis of the creep-rupture data, in the range 621 to 677 (1150 to 1250 F), by the Larson-Miller method using the procedure of Manson and Mendelson yielded a value of 20.7 for the material constant, C. In the temperature and stress regime studied, a linear relationship was observed between log (stress) and log (time-to-rupture). Fractographic analyses revealed a common fracture mode in all specimens tested. The fracture mode is described as an intermediate type, containing features of both transgranular and intergranular fracture.