| Autor: |
A. K. Tsaryuk, V. P. Kravets, O. G. Kasatkin, A. V. Ivanko, I. V. Goncharov, S. I. Moravetsky |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Problems of Atomic Science and Technology. :46-53 |
| Popis: |
The effect of welding method and technique on the HAZ microstructure in dissimilar welded joint of the type reactor vessel steel + deposited austenitic layer was investigated. The results of metallographic studies and bend tests of the welded joints are evidenced that the development of technology for weld repair of an anticorrosive coating with access to the base metal without subsequent high tempering is advisable on the basis of "buttered layer" technique by MMA welding with layer-by-layer controlled change in linear energy. This approach provides a uniform fine-grained microstructure at the overheat region of the HAZ. TIG welding with the filler wire and constant layer-by-layer linear energy also allows to refine overheat region microstructure. However, in this case, it is characterized by two types of structural heterogeneity caused by intense overheating of the base metal and diffusion of alloying elements and carbon. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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