The Paton Welding Journal, 2010, #3, 19-23 pages
Comparative evaluation of methods for determination of fracture toughness of HAZ metal of low-alloy steel welded joints
V.S. But
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
Abstract
The article presents results of experimental studies of fracture toughness of the HAZ metal of low-alloy steel welded joints with different schemes of formation of a notch. Currently available methods for preparation of specimens and results of testing them to crack tip opening displacement under three-point loading were evaluated.
Keywords: manual arc welding, welded joints, fracture toughness, crack tip opening displacement fracture diagram, metallographic examinations, structure, test temperature
Received: ??.??.??
Published: 28.03.10
References
1. Krasovsky, A.Ya., Krasiko, V.N. (1990) Crack resistance of main pipeline steels. Kiev: Naukova Dumka.
2. Broek, D. (1980) Principles of fracture mechanics. Moscow: Vysshaya Shkola.
3. (1988) Fracture mechanics and strength of materials: Refer. Book. Vol. 1. Ed. by V.V. Panasyuk. Kiev: Naukova Dumka.
4. Gray, T.G., McCombe, A.A., Shanks, W.A. (1985) CTOD testing to BS 5762. Metals and Mater., 4, 223-285.
5. Krasovsky, A.Ya. (1980) Brittleness of metals at low temperatures. Kiev: Naukova Dumka.
6. Ando, K. (1979) Evaluation of fracture toughness in heat-affected zone using the three point method for bend testing of notched specimens. Yosetsu Gakkaishi, 5, 55-60.
7. Dolby, R.E. (1971) Welding and fracture initiation in QT low alloy steels. Metal Constr. and Brit. Welding J., 3, 99-103.
8. Kirian, V.I. (1984) Procedure for evaluation of resistance of structural steels to tough fracture. Avtomatich. Svarka, 11, 1-6.
9. Fletcher, L. (1979) Practical COD fracture toughness measurement and evaluation. Australian Welding J., 7, 51-56.
10. Koshelev, P.R., Egorov, Yu.I. (1985) Application of fracture mechanics for evaluation of load-bearing capacity of main pipelines. In: Strength of structures being in service in low temperature conditions. Moscow: Metallurgiya.
11. Girenko, V.S., Dyadin, V.P. (1986) Relationships between impact toughness and fracture mechanics criteria of structural materials and their welded joints. Avtomatich. Svarka, 10, 61-62.
12. Paton, B.E., Trufyakov, V.I., Kirian, V.I. (1982) Requirements to toughness of steel of main pipelines with extended fracture arresters. Ibid., 12, 5-9.
13. Makhnenko, V.I., But, V.S., Velikoivanenko, E.A. et al. (2003) Estimation of permissible sizes of welds for mounting T-joints and sleeves on active main pipelines. The Paton Welding J., 8, 6-11.
14. But, V.S., Olejnik, O.I. (2007) Main trends in technology for repair of active pressurized main pipelines. Ibid., 5, 30-35.
Suggested Citation
V.S. But (2010) Comparative evaluation of methods for determination of fracture toughness of haz metal of low-alloy steel welded joints.
The Paton Welding J., 03, 19-23.