EFFECTS OF TEMPERING ABOVE THE LOWER CRITICAL TEMPERATURE A SUB C1 ON THE PROPERTIES OF AN HY-80 STEEL
Progress rept. no. 6
DAVID TAYLOR MODEL BASIN WASHINGTON DCSTRUCTURAL MECHANICS LAB
Pagination or Media Count:
The effects of tempering above the critical transformation temperature on the microstructure, notch-toughness and mechanical properties of HY-80 steel was investigated. The formation of alpha ferrite and prime martensite after tempering above the lower critical temperature and quenching will result in mechanical properties that fall below the requirements of the HY- 80 specification. Retempering to achieve minimum yield strengths may result in nonuniform yield strength distribution. The possibility of underbead cracking due to alloy segregation is also discussed.
- Properties of Metals and Alloys
- Fabrication Metallurgy