DEVELOPMENT OF ULTRA-HIGH STRENGTH, TEMPER-RESISTANT STEELS DESIGNED FOR IMPROVEMENT OF FATIGUE PROPERTIES THROUGH RELIEF OF RESIDUAL STRESS.
Abstract
Various experimental alloy steels were investigated with reference to temper resistance, which was evaluated on the basis of hardness measurements. Molybdenum was the major alloying element used for improving temper resistance in steels having carbon contents in the range of 0.30 to 0.55 per cent. Chromium, vanadium, and tungsten were utilized in minor amounts as alloying elements. It was found that austenitizing at 2200F was required to dissolve all of the carbides and provide a fully martensitic structure upon oil quenching or air cooling. Alloys were developed capable of maintaining hardnesses of Rc 40 to Rc 59 after tempering for one hour in the range of 1250F to 1300F. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1959
- Accession Number
- AD0690622
Entities
People
- Harvey B. Nudelman
- John P. Sheehan
Organizations
- IIT Research Institute