0
Research Papers: Design and Analysis

Residual Stress Characterization in a Dissimilar Metal Weld Nuclear Reactor Piping System Mock Up

[+] Author and Article Information
Matthew Kerr

U.S. Nuclear Regulatory Commission,
Office of Nuclear Regulatory Research,
Washington, DC 20555
e-mail: matthew.kerr.contractor@unnpp.gov

Michael Steinzig

W-13, Los Alamos National Lab,
Los Alamos, NM 87545

Thomas Sisneros

Los Alamos Neutron Science Center,
Los Alamos Nation Lab,
Los Alamos, NM 87545

1Present address: Knolls Atomic Power Lab.

2The views expressed herein are those of the authors and do not represent an official position of the U.S. NRC or Los Alamos National Lab.

3Corresponding author.

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the Journal of Pressure Vessel Technology. Manuscript received June 24, 2012; final manuscript received December 19, 2012; published online June 11, 2013. Assoc. Editor: Kunio Hasegawa.

J. Pressure Vessel Technol 135(4), 041205 (Jun 11, 2013) (8 pages) Paper No: PVT-12-1086; doi: 10.1115/1.4024446 History: Received June 24, 2012; Revised December 19, 2012

Time-of-flight neutron diffraction, contour method, and surface hole drilling residual stress measurements were conducted at Los Alamos National Lab (LANL) on a lab sized plate specimen (P4) from phase 1 of the joint U.S. Nuclear Regulatory Commission and Electric Power Research Institute Weld Residual Stress (NRC/EPRI WRS) program. The specimen was fabricated from a 304L stainless steel plate containing a seven pass alloy 82 groove weld, restrained during welding and removed from the restraint for residual stress characterization. This paper presents neutron diffraction and contour method results, and compares these experimental stress measurements to a WRS finite element (FE) model. Finally, details are provided on the procedure used to calculate the residual stress distribution in the restrained or as welded condition in order to allow comparison to other residual stress data collected as part of phase 1 of the WRS program.

FIGURES IN THIS ARTICLE
<>
Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.

References

Kerr, M., and Rathbun, H. J., 2012, “Summary of Finite Element (FE) Sensitivity Studies Conducted in Support of the NRC/EPRI Welding Residual Stress (WRS) Program,” Proceedings of ASME Pressure Vessels and Piping Conference, Toronto, ON, Canada, Paper No. PVP2012-78883.
Fredette, L. F., Kerr, M., Rathbun, H. J., and Broussard, J., 2011, “NRC/EPRI Welding Residual Stress Validation Program – Phase III Details and Findings,” Proceedings of the ASME Pressure Vessels and Piping Conference, Baltimore, MD, Paper No. PVP2011-57645.
Addendum to the Memorandum of Understanding (MOU) Between NRC's Office of Nuclear Regulatory Research and Electric Power Research Institute, Inc., “ Cooperative Nuclear Safety Research,” NRC ADAMS Accession No. ML103490002, 2/15/2011.
Broussard, J., 2009, “Fabrication of Phase 1A Weld Specimens for EPRI Welding Residual Validation Project,” Phase 1A Modeling Package, Prepared by Dominium Engineering, Inc., DEI Project No. S-5572-00-02-1.
Levesque, S., 2008, “Plate Welds for Residual Stress Validation,” Phase 1A Modeling Package, Prepared by Edison Welding Institute, EWI Project No. 51450CSP.
Bourke, M. A. M., Dunand, D. C., and Ustundag, E., 2002, “SMARTS – A Spectrometer for Strain Measurement in Engineering Materials,” Appl. Phys. A: Mater. Sci. Process., 74, pp. 1707–1709. [CrossRef]
Hutchings, M. T., Withers, P. J., Holden, T. M., and Lorentzen, T., 2005, Introduction to the Characterization of Residual Stress by Neutron Diffraction, CRC Press, Boca Raton, FL.
Von Dreele, R. B., Jorgensen, J. D., and Windsor, C. G., 1982, “Rietveld Refinement With Spallation Neutron Powder Diffraction Data,” J. Appl. Crystallogr., 15, pp. 581–589. [CrossRef]
Daymond, M. R., 2004, “The Determination of a Continuum Mechanics Equivalent Elastic Strain From the Analysis of Multiple Diffraction Peaks,” J. Appl. Phys., 96, pp. 4263–4272. [CrossRef]
Prime, M. B., Sebring, R. J., Edwards, J. M., Hughes, D. J., and Webster, P. J., 2004, “Laser Surface-Contouring and Spline Data-Smoothing for Residuals Stress Measurement,” Exp. Mech., 44, pp. 176–184. [CrossRef]
Cheng, W., Finnie, I., Gremaud, M., and Prime, M. B., 1994, “Measurement of Near-Surface Residual-Stresses Using Electric-Discharge Wire Machining,” ASME J. Eng. Mater. Technol., 116, pp. 1–7. [CrossRef]
Pagliaro, P., Prime, M. B., Swenson, H., and Zuccarello, B., 2009, “Known Residual Stress Specimens Using Opposed Indentation,” ASME J. Eng. Mater. Technol., 131, p. 031002. [CrossRef]
Abaqus 6.10, 2010, Dassault Systèmes Simulia Corp., Providence, RI.
Prime, M. B., and Kastengren, A. L., 2010, “The Contour Method Cutting Assumption: Error Minimization and Correction,” Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics Indianapolis, Society for Experimental Mechanics Inc., IN, June 7–9, Paper No. 507.
Steinzig, M., and Ponslet, E., 2003, “Residual Stress Measurements Using the Hole Drilling Method and Laser Speckle Interferometry-Part I,” Exp. Tech., 27, pp. 43–46. [CrossRef]
Goldak, J. A., and Akhlaghi, M., 2005, Computational Welding Mechanics, Springer, New York.
Chen, Y., Rudland, D., and Wilkoski, G., 2004, “Impact of Welding Sequence of the CRDM Nozzle-to-Vessel Weld Stress Analysis,” Proceedings of ASME Pressure Vessels and Piping Conference, San Diego, CA, Paper No. PVP2004-2556.
Brust, F. W., Zhang, T., Shim, D.-J., Kalyanam, S., Wilkowski, G., Smith, M., and Goodfellow, A., 2010, “Summary of Weld Residual Stress Analyses for Dissimilar Metal Weld Nozzles,” Proceedings of the ASME Pressure Vessels and Piping Conference, Bellevue, WA, Paper No. PVP2010-26106.
Zhang, T., Brust, F. W., and Wilkowski, G., 2012, “Weld Residual Stress in Various Large Diameter Nuclear Nozzels,” ASME J. Pressure Vessel Technol., 134(6), p. 061214. [CrossRef]
Armas, A. F., Bettin, O. R., Alvarez-Armas, I., and Rubiolo, G. H., 1988, “Strain Aging Effects on the Cyclic Behavior of Austenitic Stainless Steels,” J. Nucl. Mater., 155, pp. 644–649 [CrossRef]
Smith, M. C., Murànsky, O., Bendeich, P. J., and Edwards, L., 2010, “The Impact of Key Simulation Variables on Predicted Residual Stresses in Pressurizer Nozzle Dissimilar Metal Weld Mock-Ups. Part 1–Simulation,” Proceeding of the ASME Pressure Vessels and Piping Conference, Bellevue, WA, Paper No. PVP2010-26023.
Pagliaro, P., Prime, M. B., Robinson, J. S., Clausen, B., Swenson, H., Steinzig, M., and Zuccarello, B., 2011, “Measuring Inaccessible Residual Stresses Using Multiple Methods and Superposition,” Exp. Mech., 51, pp. 1123–1134. [CrossRef]
Evans, A., Johnson, G., King, A., and Withers, P. J., 2007, “Characterization of Laser Peening Residual Stresses in AL 7075 by Synchrotron Diffraction and the Contour Method,” J. Neutron Res., 15, pp. 147–154. [CrossRef]
Moat, R. J., Pinkerton, A. J., Li, L., Withers, P. J., and Preuss, M., 2011, “Residual Stresses in Laser Direct Metal Deposited Waspaloy,” Mater. Sci. Eng., A, 528, pp. 2288–2298. [CrossRef]
Zhang, Y., Ganguly, S., Edwards, L., and Fitzpatrick, M. E., 2004, “Cross-Sectional Mapping of Residual Stress in a VPPA Weld Using the Contour Method,” Acta Mater., 52, pp. 5225–5232. [CrossRef]
Kartal, M. E., Liljedahl, C. D. M., Gungor, S., Edwards, L., and Fitzpatrick, M. E., 2008, “Determination of the Profile of the Complete Residual Stress Tensor in a VPPA Weld Using the Multi-Axial Contour Method,” Acta Meter., 56, pp. 4417–4428. [CrossRef]
Withers, P. J., Turski, M., Edwards, L., Bouchard, P. J., and Buttle, D. J., 2008, “Recent Advances in Residual Stress Measurement,” Int. J. Pressure Vessels Piping, 85, pp. 118–127. [CrossRef]
Thibault, D., Bocher, P., Thomas, M., Gharghouri, M., and Côté, M., 2010, “Residual Stress Characterization in Low Transformation Temperature 13%Cr-4%Ni Stainless Steel Weld by Neutron Diffraction and the Contour Method,” Mater. Sci. Eng., A, 527, pp. 6205–6210. [CrossRef]
Brown, D. W., Holden, T. M., Clausen, B., Prime, M. B., Sisneros, T. A., Swenson, H., and Vaja, J., 2011, “Critical Comparison of Two Independent Measurements of Residual Stress in an Electron-Beam Welded Uranium Cylinder: Neutron Diffraction and the Contour Method,” Acta Mater., 59, pp. 864–873. [CrossRef]
Hosseinzadeh, F., Toparli, M. B., and Bouchard, P. J., 2012, “Slitting and Contour Method Residual Stress Measurements in an Edge Welded Beam,” ASME J. Pressure Vessel Technol., 134, p. 011402. [CrossRef]
Holden, T. M., Suzuki, H., Carr, D. G., Ripley, M. I., and Clausen, B., 2006, “Stress Measurements in Welds: Problem Areas,” Mater. Sci. Eng., A, 437, pp. 33–37. [CrossRef]
Shin, S. H., 2005, “FEM Analysis of Plasticity-Induced Error on Measurement of Welding Residual Stress by the Contour Method,” J. Mech. Sci. Technol., 19, pp. 1885–1890. [CrossRef]
Dennis, R. J., Bray, D. P., Leggatt, N. A., and Turski, M., 2008, “Assessment of the Influence of Plasticity and Constraint on Measured Residual Stresses Using the Contour Method,” Proceedings of the ASME Pressure Vessels and Piping Conference, Chicago, IL, Paper No. PVP2008-61490.

Figures

Grahic Jump Location
Fig. 1

Schematic of the P4 plate specimen and restraining clamp (a) drafting showing axis convention used and (b) measurement location and neutron scattering geometry for the longitudinal/normal strain components

Grahic Jump Location
Fig. 2

Comparison of longitudinal stresses in the restrained or as welded condition (a) neutron diffraction with black diamonds indicating the measurement location, (b) contour method, and (c) WRS FE model results using isotropic hardening. Plate perimeter as measured in the contour method is plotted as a point of reference.

Grahic Jump Location
Fig. 3

Results from WRS FE thermal model (a) comparison of the fusion zone to weld macrograph, (b)–(d) TC data versus WRS FE thermal model. TC data was not collected below ∼350 K, explaining the gaps visible in the TC data.

Grahic Jump Location
Fig. 4

(a) Calculated correction factors along the indicated line (y = 6 mm), transverse correction is the most significant and (b) correction over corrects the transverse residual stress data relative to the FE calculations

Grahic Jump Location
Fig. 5

Comparison of unrestrained plate perimeter (solid line) as measured from the contour method profilometry to (a) 2D and (b) 3D WRS FE model (diamonds)

Grahic Jump Location
Fig. 6

Comparison of longitudinal stresses at (a) midplane (y = 0 mm) and (b) parallel to the midplane (y = 6 mm)

Grahic Jump Location
Fig. 7

Comparison of transverse and normal stress components at midplane

Grahic Jump Location
Fig. 8

Comparison of longitudinal stress components along centerline, (a) x = 0 mm, (b) x =−3.5 mm, (c) x = −7 mm, and (d) x = −10.5 mm. Same grayscale convention as Fig. 6 is followed, grey line in (a) results from a WRS FE model using the mixed hardening law from the British Energy work package [18].

Grahic Jump Location
Fig. 9

Peak intensity as a function of weld position, showing that point-to-point intensity variation is greater in the weld than in the base metal

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In