Effects of Welding Procedure on Corrosion Resistance and Hydrogen Embrittlement of Supermartensitic Stainless Steel Deposits
| Autor: | Svoboda Hernán, Surian Estela, Zappa Sebastián |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Materials science
post weld heat treatment Metallurgy Shielding gas Metals and Alloys INGENIERÍAS Y TECNOLOGÍAS Welding Corrosion law.invention hydrogen embrittlement Mechanics of Materials law Ingeniería de los Materiales supermartensitic stainless steel shielding gas Metallic materials Materials Chemistry Hydrogen embrittlement |
| Zdroj: | Journal of Iron and Steel Research International. 20:124-132 |
| ISSN: | 2210-3988 1006-706X |
| DOI: | 10.1016/s1006-706x(13)60225-3 |
| Popis: | The effects of shielding gas and post weld heat treatment on the pitting resistance, stress corrosion cracking and hydrogen embrittlement of supermartensitic stainless steel deposits were studied. Two all-weld-metal test coupons were prepared using a metal-cored wire under Ar+5% He and Ar+18%CO2 gas shielding mixtures. Solubilizing and solubilizing plus double tempering heat treatments were done with the objective of achieving different microstructural results. The samples welded under Ar+5% He showed higher pitting corrosion resistance, for all post weld heat treatments, than those welded under Ar+18%CO2. The different post weld heat treatments generated higher susceptibility to this corrosion mechanism. None of the samples presented signs of stress corrosion cracking, but in those subjected to the heat treatment, grain boundary selective attack was observed, on the surfaces of all the samples studied. The samples with highest hardness were more susceptible to hydrogen damage, thereby leading to reduced tensile strength on this condition. Fil: Zappa Maidana, Norberto Sebastián. Universidad Nacional de Lomas de Zamora; Argentina. Universidad Tecnológica Nacional. Facultad Regional San Nicolás; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Surian, Estela Silvia. Universidad Nacional de Lomas de Zamora; Argentina. Universidad Tecnológica Nacional. Facultad Regional San Nicolás; Argentina Fil: Svoboda, Hernán Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina |
| Databáze: | OpenAIRE |
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