Microstructural evaluation of Inconel 625 weld cladding deposited by the GMAW and GMAW with rotating electrodep
Creators
- 1. Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (CEFET), Rio de Janeiro, RJ (Brazil)
Description
The microstructure of the Inconel 625 single layer weld cladding deposited by the conventional GMAW and GMAW with rotating electrode (GMAW-RE) processes on carbon steel is investigated. Metallographic characterization was performed on samples removed transversally to the weld deposit by optical and scanning electron microscopy equipped with energy dispersive spectrometry to evaluate the secondary phases. The results showed that the GMAW-RE process provided a more homogeneous penetration and a lower dilution rate than the GMAW process. As a consequence, a reduced Fe content and a refined austenitic microstructure with a lower amount of secondary phases were observed, factors that contribute greatly to better overlay performance. This superior performance indicates that the GMAW-RE process has the potential to be an advantageous alternative for Inconel 625 weld claddings. (author)
Additional details
Identifiers
Publishing Information
- Journal Title
- Tecnologia em Metalurgia, Materiais e Mineracao
- Journal Volume
- 21
- Journal Page Range
- 12 p.
- ISSN
- 2176-1523
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 55079057
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CARBON STEELS; CLADDING; COMPARATIVE EVALUATIONS; ELECTRODES; GAS METAL-ARC WELDING; INCONEL 625; MICROSTRUCTURE; NICKEL ALLOYS; OPTICAL MICROSCOPY; SCANNING ELECTRON MICROSCOPY; VICKERS HARDNESS; X-RAY SPECTROSCOPY
- Descriptors DEC
- ALLOY-NI61CR22MO9NB4FE3; ALLOYS; ALUMINIUM ADDITIONS; ALUMINIUM ALLOYS; ARC WELDING; CARBON ADDITIONS; CHROMIUM ALLOYS; CORROSION RESISTANT ALLOYS; DEPOSITION; ELECTRON MICROSCOPY; EVALUATION; FABRICATION; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; INCONEL ALLOYS; IRON ALLOYS; IRON BASE ALLOYS; JOINING; MATERIALS; MICROSCOPY; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NICKEL BASE ALLOYS; NIOBIUM ALLOYS; SPECTROSCOPY; STEELS; SURFACE COATING; TITANIUM ADDITIONS; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS; WELDING