Application of 20 MnMoNi 5 5 steel with lowered Si content to heavy thick steam generator tube sheet forgings
| Autor: | M. Kusuhashi, Hisashi Tsukada, S. Onodera, S. Kawaguchi, Komei Suzuki, Ikuo Sato |
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| Rok vydání: | 1985 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Fabrication business.industry Mechanical Engineering Metallurgy Weldability Boiler (power generation) engineering.material Steelmaking Forging Nuclear Energy and Engineering Deoxidized steel engineering General Materials Science Light-water reactor Safety Risk Reliability and Quality business Material properties Waste Management and Disposal |
| Zdroj: | Nuclear Engineering and Design. 87:249-257 |
| ISSN: | 0029-5493 |
| Popis: | The 20 MnMoNi 5 5 steel with a lowered Si content, in which the addition of Al for grain refining is made before vacuum degassing in the steel making process, was applied to the heavy thick tube sheet forging for the steam generator of a light water reactor. The properties of the forging were compared with a forging of the conventional Si/Al deoxidized steel. The steel with lowered Si content showed less A- and V-segregations than the Si/Al deoxidized steel. And also the steel with lowered Si content has improved impact properties and ductility as well as a greater isotropy of properties. The excelent weldability was confirmed by the tangential sectioning test. The less segregated 20 MnMoNi 5 5 steel with lowered Si content, which has improved material properties such as impact properties and weldability, assures a better integrity of the component and easier fabrication. |
| Databáze: | OpenAIRE |
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