Effect of Microstructure on Mechanical Behavior of Ni-base Alloy Dissimilar Metal Welds

Noora Hytönen; Yanling Ge; Zaiqing Que; Sebastian Lindqvist; Jari Lydman; Ulla Ehrnstén; Paavo Rautala; Iikka Virkkunen; Pål Efsing

Effect of Microstructure on Mechanical Behavior of Ni-base Alloy Dissimilar Metal Welds

Noora Hytönen, Yanling Ge, Zaiqing Que, Sebastian Lindqvist, Jari Lydman, Ulla Ehrnstén, Paavo Rautala, Iikka Virkkunen, Pål Efsing

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

Two dissimilar metal weld (DMW) mock-ups, representative of actual nuclear components, are investigated in this work: a Ringhals Alloy 52 DMW mock-up consisting of two Alloy 52 butterings and a TVO Alloy 52 narrow-gap DMW mock-up without buttering. In this study, the microstructure characterization, the micro- and nanohardness measurements and the carbide analysis across the SA508/nickel-base Alloy 52 fusion boundary of these two mock-ups were performed. Different width of carbon-depleted zone and slightly different carbide types in the low-allow steel (LAS) heat-affected zone were found in these two DMWs. The local hardness mismatch and fusion boundary transition zones at the LAS/nickel-base weld metal interface were analyzed for these two mock-ups.

Original language	English
Title of host publication	The 20th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactor meeting
Publisher	American Nuclear Society (ANS)
Publication status	Accepted/In press - 2022
MoE publication type	A4 Article in a conference publication
Event	20th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactor, EnvDeg 2022 - Snowmass, United States Duration: 17 Jul 2022 → 21 Jul 2022

Conference

Conference	20th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactor, EnvDeg 2022
Country/Territory	United States
City	Snowmass
Period	17/07/22 → 21/07/22

Cite this

Hytönen, N., Ge, Y., Que, Z., Lindqvist, S., Lydman, J., Ehrnstén, U., Rautala, P., Virkkunen, I., & Efsing, P. (Accepted/In press). Effect of Microstructure on Mechanical Behavior of Ni-base Alloy Dissimilar Metal Welds. In The 20th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactor meeting American Nuclear Society (ANS).

@inproceedings{1827a22ac0e6468da674f6bb3bdb4de8,

title = "Effect of Microstructure on Mechanical Behavior of Ni-base Alloy Dissimilar Metal Welds",

abstract = "Two dissimilar metal weld (DMW) mock-ups, representative of actual nuclear components, are investigated in this work: a Ringhals Alloy 52 DMW mock-up consisting of two Alloy 52 butterings and a TVO Alloy 52 narrow-gap DMW mock-up without buttering. In this study, the microstructure characterization, the micro- and nanohardness measurements and the carbide analysis across the SA508/nickel-base Alloy 52 fusion boundary of these two mock-ups were performed. Different width of carbon-depleted zone and slightly different carbide types in the low-allow steel (LAS) heat-affected zone were found in these two DMWs. The local hardness mismatch and fusion boundary transition zones at the LAS/nickel-base weld metal interface were analyzed for these two mock-ups.",

author = "Noora Hyt{\"o}nen and Yanling Ge and Zaiqing Que and Sebastian Lindqvist and Jari Lydman and Ulla Ehrnst{\'e}n and Paavo Rautala and Iikka Virkkunen and P{\aa}l Efsing",

note = "The authors would like to acknowledge Ringhals AB, OKG AB, Teollisuuden Voima Oyj and VTT Technical Research Centre of Finland for funding and providing the research material within the FEMMA (Forum for the Effect of Thermal Ageing and Microstructure on Mechanical and EAC Behaviour of Nibased Alloy Dissimilar Metal Welds) research project.; 20th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactor, EnvDeg 2022 ; Conference date: 17-07-2022 Through 21-07-2022",

year = "2022",

language = "English",

booktitle = "The 20th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactor meeting",

publisher = "American Nuclear Society (ANS)",

address = "United States",

}

Hytönen, N, Ge, Y, Que, Z , Lindqvist, S , Lydman, J, Ehrnstén, U, Rautala, P, Virkkunen, I & Efsing, P 2022, Effect of Microstructure on Mechanical Behavior of Ni-base Alloy Dissimilar Metal Welds. in The 20th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactor meeting. American Nuclear Society (ANS), 20th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactor, EnvDeg 2022, Snowmass, Colorado, United States, 17/07/22.

Effect of Microstructure on Mechanical Behavior of Ni-base Alloy Dissimilar Metal Welds. / Hytönen, Noora; Ge, Yanling; Que, Zaiqing et al.
The 20th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactor meeting. American Nuclear Society (ANS), 2022.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Effect of Microstructure on Mechanical Behavior of Ni-base Alloy Dissimilar Metal Welds

AU - Hytönen, Noora

AU - Ge, Yanling

AU - Que, Zaiqing

AU - Lindqvist, Sebastian

AU - Lydman, Jari

AU - Ehrnstén, Ulla

AU - Rautala, Paavo

AU - Virkkunen, Iikka

AU - Efsing, Pål

N1 - The authors would like to acknowledge Ringhals AB, OKG AB, Teollisuuden Voima Oyj and VTT Technical Research Centre of Finland for funding and providing the research material within the FEMMA (Forum for the Effect of Thermal Ageing and Microstructure on Mechanical and EAC Behaviour of Nibased Alloy Dissimilar Metal Welds) research project.

PY - 2022

Y1 - 2022

N2 - Two dissimilar metal weld (DMW) mock-ups, representative of actual nuclear components, are investigated in this work: a Ringhals Alloy 52 DMW mock-up consisting of two Alloy 52 butterings and a TVO Alloy 52 narrow-gap DMW mock-up without buttering. In this study, the microstructure characterization, the micro- and nanohardness measurements and the carbide analysis across the SA508/nickel-base Alloy 52 fusion boundary of these two mock-ups were performed. Different width of carbon-depleted zone and slightly different carbide types in the low-allow steel (LAS) heat-affected zone were found in these two DMWs. The local hardness mismatch and fusion boundary transition zones at the LAS/nickel-base weld metal interface were analyzed for these two mock-ups.

AB - Two dissimilar metal weld (DMW) mock-ups, representative of actual nuclear components, are investigated in this work: a Ringhals Alloy 52 DMW mock-up consisting of two Alloy 52 butterings and a TVO Alloy 52 narrow-gap DMW mock-up without buttering. In this study, the microstructure characterization, the micro- and nanohardness measurements and the carbide analysis across the SA508/nickel-base Alloy 52 fusion boundary of these two mock-ups were performed. Different width of carbon-depleted zone and slightly different carbide types in the low-allow steel (LAS) heat-affected zone were found in these two DMWs. The local hardness mismatch and fusion boundary transition zones at the LAS/nickel-base weld metal interface were analyzed for these two mock-ups.

M3 - Conference article in proceedings

BT - The 20th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactor meeting

PB - American Nuclear Society (ANS)

T2 - 20th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactor, EnvDeg 2022

Y2 - 17 July 2022 through 21 July 2022

ER -

Effect of Microstructure on Mechanical Behavior of Ni-base Alloy Dissimilar Metal Welds

Abstract

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