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Microstructure and mechanical properties of underwater wet welded high-carbon-equivalent steel Q460 using austenitic consumables.
- Source :
-
Journal of Materials Processing Technology . Nov2017, Vol. 249, p149-157. 9p. - Publication Year :
- 2017
-
Abstract
- Underwater wet flux-cored arc welding of Q460 steel using specially developed Ni-based filler and commercially obtained ER308 were investigated. Wet welded joints using Ni-based filler were of high performance with high ultimate tensile strength (518 MPa) and impact toughness of the weld metal (128.9 J/cm 2 ). ER308 failed to acquire sound welded joints due to extensive slag remained in the bottom of groove. The highest microhardness (450 HV) was recorded on the coarse-grained heat-affected zone of the base metal for both joints. TypeⅡboundaries existed in the interfaces between austenitic weld metal and ferritic base metal. Compared to austenitic stainless steel weld metal, nickel-based weld metal possessed the ability to be significantly diluted by Q460 base metal. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MICROSTRUCTURE
*TENSILE strength
*WELDED joints
*MICROHARDNESS
*STAINLESS steel
Subjects
Details
- Language :
- English
- ISSN :
- 09240136
- Volume :
- 249
- Database :
- Academic Search Index
- Journal :
- Journal of Materials Processing Technology
- Publication Type :
- Academic Journal
- Accession number :
- 124472317
- Full Text :
- https://doi.org/10.1016/j.jmatprotec.2017.06.009