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Journal of Materials Engineering and Performance

Erschienen in:

01.10.2011

A Study on Factors Influencing Toughness of Basic Flux-Cored Weld of Modified 9Cr-1Mo Steel

verfasst von: B. Arivazhagan, M. Kamaraj

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 7/2011

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Abstract

Flux-cored arc welding (FCAW) is relatively a new process for joining of modified 9Cr-1Mo (P91) steel. In this study, effect of shielding gas composition, inclusion content, gas tungsten-arc welding (GTAW) surface remelting, and postweld heat treatment (PWHT) on toughness were investigated. The high amount of silicon resulted in the formation of δ-ferrite in basic flux-cored weld. A mixture of 80% argon + 20% (80A) carbon dioxide shielding gas during welding resulted in the required toughness of 47 J at room temperature. The 95% argon + 5% carbon dioxide (95A) gas-shielded welds have lower toughness due to higher amount of δ-ferrite (4%) than 80% argon + 20% carbon dioxide welds (2%). In essence, most desirable shielding gas medium to achieve optimum toughness was 80% argon + 20% carbon dioxide in basic flux-cored arc welding.

Vorheriger Artikel Diffusion Boronizing of H11 Hot Work Tool Steel

Nächster Artikel Influence of Superheat on Microstructure and Mechanical Properties of Ductile Cu47.5Zr47.5Al5 Bulk Metallic Glass-Matrix Composite

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Titel: A Study on Factors Influencing Toughness of Basic Flux-Cored Weld of Modified 9Cr-1Mo Steel
verfasst von: B. Arivazhagan
M. Kamaraj
Publikationsdatum: 01.10.2011
Verlag: Springer US
Erschienen in: Journal of Materials Engineering and Performance / Ausgabe 7/2011
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-010-9757-3

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