Plastic strain and residual stress distributions in an AISI 304 stainless steel BWR pipe weld

Tapio Saukkonen; Miikka Aalto; Iikka Virkkunen; Ulla Ehrnstén; Hannu Hänninen

Plastic strain and residual stress distributions in an AISI 304 stainless steel BWR pipe weld

Tapio Saukkonen^*, Miikka Aalto, Iikka Virkkunen, Ulla Ehrnstén, Hannu Hänninen

^*Corresponding author for this work

Department of Energy and Mechanical Engineering

VTT Technical Research Centre of Finland

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

9 Citations (Scopus)

Abstract

In AISI 304 stainless steel pipe welds weld shrinkage causes large variations in residual plastic strain in different parts of the weld metal and heat-affected zone (HAZ). The amount of strain was analyzed by EBSD quantitatively by comparing the intra-grain misorientations to the calibration curve. Highest degrees of plastic strain (10...20%) were detected in the HAZ close to the root area of a prototypical BWR plant weld. Strain in the weld metal varies in the different directions of solidification, being high in the weld bead boundaries and near the fusion lines. Preliminary studies of the effects of mechanical and elastic anisotropy of the weld metal microstructure on the grain size level were performed by EBSD and nanoindentation. The residual stress distribution in the same weld cross-section was determined by a contour method. The residual strain and stress distributions are superimposed and EAC susceptibility of various areas of the pipe weld is evaluated and discussed.

Original language	English
Title of host publication	15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors
Publisher	Wiley
Pages	2221-2237
Number of pages	17
ISBN (Electronic)	9781118456835
ISBN (Print)	9781118132418
Publication status	Published - 2011
MoE publication type	A4 Conference publication
Event	International Conference on Environmental Degradation of Materials in Nuclear Power Systems and Water Reactors - Colorado Springs, United States Duration: 7 Aug 2011 → 11 Aug 2011 Conference number: 15

Conference

Conference	International Conference on Environmental Degradation of Materials in Nuclear Power Systems and Water Reactors
Abbreviated title	ED
Country/Territory	United States
City	Colorado Springs
Period	07/08/2011 → 11/08/2011

Keywords

Boiling water reactor
Electron backsacatter diffraction
Mechanical anisotropy
Residual stress and strain
Stainless steel piping
Stress corrosion cracking
Welding

Cite this

@inproceedings{b54b0e56bf5749d3b5c65adb3aaa705f,

title = "Plastic strain and residual stress distributions in an AISI 304 stainless steel BWR pipe weld",

abstract = "In AISI 304 stainless steel pipe welds weld shrinkage causes large variations in residual plastic strain in different parts of the weld metal and heat-affected zone (HAZ). The amount of strain was analyzed by EBSD quantitatively by comparing the intra-grain misorientations to the calibration curve. Highest degrees of plastic strain (10...20%) were detected in the HAZ close to the root area of a prototypical BWR plant weld. Strain in the weld metal varies in the different directions of solidification, being high in the weld bead boundaries and near the fusion lines. Preliminary studies of the effects of mechanical and elastic anisotropy of the weld metal microstructure on the grain size level were performed by EBSD and nanoindentation. The residual stress distribution in the same weld cross-section was determined by a contour method. The residual strain and stress distributions are superimposed and EAC susceptibility of various areas of the pipe weld is evaluated and discussed.",

keywords = "Boiling water reactor, Electron backsacatter diffraction, Mechanical anisotropy, Residual stress and strain, Stainless steel piping, Stress corrosion cracking, Welding",

author = "Tapio Saukkonen and Miikka Aalto and Iikka Virkkunen and Ulla Ehrnst{\'e}n and Hannu H{\"a}nninen",

year = "2011",

language = "English",

isbn = "9781118132418",

pages = "2221--2237",

booktitle = "15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors",

publisher = "Wiley",

address = "United Kingdom",

note = "International Conference on Environmental Degradation of Materials in Nuclear Power Systems and Water Reactors, ED ; Conference date: 07-08-2011 Through 11-08-2011",

}

Saukkonen, T, Aalto, M, Virkkunen, I, Ehrnstén, U & Hänninen, H 2011, Plastic strain and residual stress distributions in an AISI 304 stainless steel BWR pipe weld. in 15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors. Wiley, pp. 2221-2237, International Conference on Environmental Degradation of Materials in Nuclear Power Systems and Water Reactors, Colorado Springs, United States, 07/08/2011.

Plastic strain and residual stress distributions in an AISI 304 stainless steel BWR pipe weld. / Saukkonen, Tapio; Aalto, Miikka; Virkkunen, Iikka et al.
15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors. Wiley, 2011. p. 2221-2237.

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

TY - GEN

T1 - Plastic strain and residual stress distributions in an AISI 304 stainless steel BWR pipe weld

AU - Saukkonen, Tapio

AU - Aalto, Miikka

AU - Virkkunen, Iikka

AU - Ehrnstén, Ulla

AU - Hänninen, Hannu

N1 - Conference code: 15

PY - 2011

Y1 - 2011

N2 - In AISI 304 stainless steel pipe welds weld shrinkage causes large variations in residual plastic strain in different parts of the weld metal and heat-affected zone (HAZ). The amount of strain was analyzed by EBSD quantitatively by comparing the intra-grain misorientations to the calibration curve. Highest degrees of plastic strain (10...20%) were detected in the HAZ close to the root area of a prototypical BWR plant weld. Strain in the weld metal varies in the different directions of solidification, being high in the weld bead boundaries and near the fusion lines. Preliminary studies of the effects of mechanical and elastic anisotropy of the weld metal microstructure on the grain size level were performed by EBSD and nanoindentation. The residual stress distribution in the same weld cross-section was determined by a contour method. The residual strain and stress distributions are superimposed and EAC susceptibility of various areas of the pipe weld is evaluated and discussed.

AB - In AISI 304 stainless steel pipe welds weld shrinkage causes large variations in residual plastic strain in different parts of the weld metal and heat-affected zone (HAZ). The amount of strain was analyzed by EBSD quantitatively by comparing the intra-grain misorientations to the calibration curve. Highest degrees of plastic strain (10...20%) were detected in the HAZ close to the root area of a prototypical BWR plant weld. Strain in the weld metal varies in the different directions of solidification, being high in the weld bead boundaries and near the fusion lines. Preliminary studies of the effects of mechanical and elastic anisotropy of the weld metal microstructure on the grain size level were performed by EBSD and nanoindentation. The residual stress distribution in the same weld cross-section was determined by a contour method. The residual strain and stress distributions are superimposed and EAC susceptibility of various areas of the pipe weld is evaluated and discussed.

KW - Boiling water reactor

KW - Electron backsacatter diffraction

KW - Mechanical anisotropy

KW - Residual stress and strain

KW - Stainless steel piping

KW - Stress corrosion cracking

KW - Welding

UR - http://www.scopus.com/inward/record.url?scp=84867587961&partnerID=8YFLogxK

M3 - Conference article in proceedings

AN - SCOPUS:84867587961

SN - 9781118132418

SP - 2221

EP - 2237

BT - 15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors

PB - Wiley

T2 - International Conference on Environmental Degradation of Materials in Nuclear Power Systems and Water Reactors

Y2 - 7 August 2011 through 11 August 2011

ER -

Plastic strain and residual stress distributions in an AISI 304 stainless steel BWR pipe weld

Abstract

Conference

Keywords

Other files and links

Fingerprint

Cite this