Thermal cycle-dependent metallurgical variations and their effects on the through-thickness mechanical properties in thick section narrow-gap weldsCitation formats

Standard

Thermal cycle-dependent metallurgical variations and their effects on the through-thickness mechanical properties in thick section narrow-gap welds. / Rathod, Dinesh; Francis, John; Roy, Matthew; Obasi, Gideon; Irvine, Neil.

In: Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing , 2017.

Research output: Contribution to journalArticle

Harvard

Rathod, D, Francis, J, Roy, M, Obasi, G & Irvine, N 2017, 'Thermal cycle-dependent metallurgical variations and their effects on the through-thickness mechanical properties in thick section narrow-gap welds', Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing . https://doi.org/10.1016/j.msea.2017.09.044

APA

Rathod, D., Francis, J., Roy, M., Obasi, G., & Irvine, N. (2017). Thermal cycle-dependent metallurgical variations and their effects on the through-thickness mechanical properties in thick section narrow-gap welds. Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing . https://doi.org/10.1016/j.msea.2017.09.044

Vancouver

Rathod D, Francis J, Roy M, Obasi G, Irvine N. Thermal cycle-dependent metallurgical variations and their effects on the through-thickness mechanical properties in thick section narrow-gap welds. Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing . 2017. https://doi.org/10.1016/j.msea.2017.09.044

Author

Rathod, Dinesh ; Francis, John ; Roy, Matthew ; Obasi, Gideon ; Irvine, Neil. / Thermal cycle-dependent metallurgical variations and their effects on the through-thickness mechanical properties in thick section narrow-gap welds. In: Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing . 2017.

Bibtex

@article{b7cbc00897b5462d86e9313d453c40fb,
title = "Thermal cycle-dependent metallurgical variations and their effects on the through-thickness mechanical properties in thick section narrow-gap welds",
abstract = "The primary components in pressurised water reactors are manufactured by welding thick sections of either SA508 or SA533 pressure vessel steel using processes such as submerged arc welding (SAW) or gas-tungsten arc welding (GTAW). Narrow-groove (NG) variants of these processes have reduced welding times, but thick-section welds still require a large number of passes. In this work, the effects of a large number of welding thermal cycles on the through-thickness variability in microstructure and mechanical properties have been analysed for NG-GTAW and NG-SAW joints made in 78 mm thick SA533 steel. Microstructures were characterised using optical and scanning electron microscopy, while mechanical properties were captured in cross-weld tensile tests using digital image correlation and through tests on coupons extracted exclusively from the weld metal and from the heat-affected zone. Charpy impact testing was used to assess toughness. While the toughness was relatively consistent throughout the SAW joint, significant through-thickness variations in toughness were observed in the NG-GTAW joint, which can be attributed to the varying degree to which the weldment was tempered by subsequent welding thermal cycles.",
keywords = "As-welded condition, bead stacking sequence, reactor pressure vessel, Steam generator, temper-bead welding, weld groove geometry",
author = "Dinesh Rathod and John Francis and Matthew Roy and Gideon Obasi and Neil Irvine",
year = "2017",
doi = "10.1016/j.msea.2017.09.044",
language = "English",
journal = "Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Thermal cycle-dependent metallurgical variations and their effects on the through-thickness mechanical properties in thick section narrow-gap welds

AU - Rathod, Dinesh

AU - Francis, John

AU - Roy, Matthew

AU - Obasi, Gideon

AU - Irvine, Neil

PY - 2017

Y1 - 2017

N2 - The primary components in pressurised water reactors are manufactured by welding thick sections of either SA508 or SA533 pressure vessel steel using processes such as submerged arc welding (SAW) or gas-tungsten arc welding (GTAW). Narrow-groove (NG) variants of these processes have reduced welding times, but thick-section welds still require a large number of passes. In this work, the effects of a large number of welding thermal cycles on the through-thickness variability in microstructure and mechanical properties have been analysed for NG-GTAW and NG-SAW joints made in 78 mm thick SA533 steel. Microstructures were characterised using optical and scanning electron microscopy, while mechanical properties were captured in cross-weld tensile tests using digital image correlation and through tests on coupons extracted exclusively from the weld metal and from the heat-affected zone. Charpy impact testing was used to assess toughness. While the toughness was relatively consistent throughout the SAW joint, significant through-thickness variations in toughness were observed in the NG-GTAW joint, which can be attributed to the varying degree to which the weldment was tempered by subsequent welding thermal cycles.

AB - The primary components in pressurised water reactors are manufactured by welding thick sections of either SA508 or SA533 pressure vessel steel using processes such as submerged arc welding (SAW) or gas-tungsten arc welding (GTAW). Narrow-groove (NG) variants of these processes have reduced welding times, but thick-section welds still require a large number of passes. In this work, the effects of a large number of welding thermal cycles on the through-thickness variability in microstructure and mechanical properties have been analysed for NG-GTAW and NG-SAW joints made in 78 mm thick SA533 steel. Microstructures were characterised using optical and scanning electron microscopy, while mechanical properties were captured in cross-weld tensile tests using digital image correlation and through tests on coupons extracted exclusively from the weld metal and from the heat-affected zone. Charpy impact testing was used to assess toughness. While the toughness was relatively consistent throughout the SAW joint, significant through-thickness variations in toughness were observed in the NG-GTAW joint, which can be attributed to the varying degree to which the weldment was tempered by subsequent welding thermal cycles.

KW - As-welded condition

KW - bead stacking sequence

KW - reactor pressure vessel

KW - Steam generator

KW - temper-bead welding

KW - weld groove geometry

U2 - 10.1016/j.msea.2017.09.044

DO - 10.1016/j.msea.2017.09.044

M3 - Article

JO - Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing

JF - Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing

SN - 0921-5093

ER -