An Analysis of the Weldability of Ductile Cast Iron Using Inconel 625 for the Root Weld and Electrodes Coated in 97.6% Nickel for the Filler Welds
| Autor: | Miguel-Angel Pérez-Puig, Rafael Pascual-Martínez, Francisco Javier Cárcel-Carrasco, Manuel Pascual-Guillamón |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
lcsh:TN1-997
Materials science CONSTRUCCIONES ARQUITECTONICAS Alloy Weldability Ductile cast iron chemistry.chemical_element 02 engineering and technology Welding engineering.material Tungsten 01 natural sciences law.invention law CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA 0103 physical sciences General Materials Science Pre-heating Composite material Microstructure lcsh:Mining engineering. Metallurgy 010302 applied physics Gas tungsten arc welding Metallurgy Metals and Alloys 021001 nanoscience & nanotechnology Inconel 625 chemistry weldability pre-heating ductile cast iron microstructure root pass engineering Root pass Cast iron 0210 nano-technology |
| Zdroj: | Metals, Vol 6, Iss 11, p 283 (2016) RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname Metals; Volume 6; Issue 11; Pages: 283 |
| DOI: | 10.3390/met6110283 |
| Popis: | This article examines the weldability of ductile cast iron when the root weld is applied with a tungsten inert gas (TIG) welding process employing an Inconel 625 source rod, and when the filler welds are applied with electrodes coated with 97.6% Ni. The welds were performed on ductile cast iron specimen test plates sized 300 mm × 90 mm × 10 mm with edges tapered at angles of 60°. The plates were subjected to two heat treatments. This article analyzes the influence on weldability of the various types of electrodes and the effect of preheat treatments. Finally, a microstructure analysis is made of the material next to the weld in the metal-weld interface and in the weld itself. The microstructure produced is correlated with the strength of the welds. We treat an alloy with 97.6% Ni, which prevents the formation of carbides. With a heat treatment at 900 °C and 97.6% Ni, there is a dissolution of all carbides, forming nodules in ferritic matrix graphite. |
| Databáze: | OpenAIRE |
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