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Impact Toughness of High-Strength Low-Alloy Steels Joined by Friction STIR Welding.
- Source :
-
Russian Physics Journal . Sep2024, Vol. 67 Issue 9, p1356-1363. 8p. - Publication Year :
- 2024
-
Abstract
- The microstructure and impact toughness of high-strength low-alloy steels joined by friction stir welding are studied. The hardened steel samples are tempered at a temperature of 600–650°C for 1 hour, followed by warm rolling to a total strain of 1.5 at the same temperature. The resulting steels are characterized by an ultrafine-grained lamella-type microstructure. The as-processed steel plates are joined by friction stir welding. A martensitic microstructure is formed in the stir zone. The steel samples with a carbon content of 0.15% show high impact toughness of 68 J/cm2 at room temperature with a gradual decrease to 16 J/cm2 at a temperature of –196°C, while the steel samples with a carbon content of 0.36% exhibit an impact toughness of 10 J/cm2 at room temperature. The 0.36% carbon steel joints are tempered at a temperature of 650°C for 1 hour, which increases their room-temperature impact toughness to 67 J/cm2. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10648887
- Volume :
- 67
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Russian Physics Journal
- Publication Type :
- Academic Journal
- Accession number :
- 180004107
- Full Text :
- https://doi.org/10.1007/s11182-024-03254-6