The distribution of residual stresses was determined in an overlay dissimilar joining pipe weld using neutron diffraction. The specimen was dissimilarly welded between the bcc ferrite steel (SA508) and fcc austenite (SA182) steel with the Ni-based welding consumable (Alloy 182). The weld pipe simulates the nozzle joint component of the nuclear power plants with the dimension of about 130-mm diameter, 500-mm length, and 21-mm thickness. A total of 13 positions were measured from 2 mm to 20 mm underneath the pipe outer wall with 1∼2 mm steps along the weld centerline. The neutron beam gauge volume provides 1-mm spatial resolution along the thickness direction of the weld pipe. The macroscopic ‘stress-free’ lattice spacing (do) was also measured using 2-mm width comb teeth coupons taken from the identical location of the bulk weld neutron-diffraction measurements. The result shows that the hoop stress component developed tension of about 100 MPa and compression of −600 MPa near the outer and inner wall surface of the overlay pipe weld, respectively.
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ASME 2011 Pressure Vessels and Piping Conference
July 17–21, 2011
Baltimore, Maryland, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-4456-4
PROCEEDINGS PAPER
Residual Stress Measurements Through the Thickness of the Dissimilar Weld Pipe Using Neutron Diffraction
Wanchuck Woo,
Wanchuck Woo
Korea Atomic Energy Research Institute, Daejeon, South Korea
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Vyacheslav Em,
Vyacheslav Em
Korea Atomic Energy Research Institute, Daejeon, South Korea
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Ho-Jin Lee,
Ho-Jin Lee
Korea Atomic Energy Research Institute, Daejeon, South Korea
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Baek-Seok Seong,
Baek-Seok Seong
Korea Atomic Energy Research Institute, Daejeon, South Korea
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Kwang Soo Park,
Kwang Soo Park
Doosan Heavy Industries & Construction, Changwon, Gyeongnam, South Korea
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Jin Gwi Byeon,
Jin Gwi Byeon
Doosan Heavy Industries & Construction, Changwon, Gyeongnam, South Korea
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Camden R. Hubbard
Camden R. Hubbard
Oak Ridge National Laboratory, Oak Ridge, TN
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Wanchuck Woo
Korea Atomic Energy Research Institute, Daejeon, South Korea
Vyacheslav Em
Korea Atomic Energy Research Institute, Daejeon, South Korea
Ho-Jin Lee
Korea Atomic Energy Research Institute, Daejeon, South Korea
Baek-Seok Seong
Korea Atomic Energy Research Institute, Daejeon, South Korea
Kwang Soo Park
Doosan Heavy Industries & Construction, Changwon, Gyeongnam, South Korea
Jin Gwi Byeon
Doosan Heavy Industries & Construction, Changwon, Gyeongnam, South Korea
Camden R. Hubbard
Oak Ridge National Laboratory, Oak Ridge, TN
Paper No:
PVP2011-58078, pp. 1681-1686; 6 pages
Published Online:
May 21, 2012
Citation
Woo, W, Em, V, Lee, H, Seong, B, Park, KS, Byeon, JG, & Hubbard, CR. "Residual Stress Measurements Through the Thickness of the Dissimilar Weld Pipe Using Neutron Diffraction." Proceedings of the ASME 2011 Pressure Vessels and Piping Conference. Volume 6: Materials and Fabrication, Parts A and B. Baltimore, Maryland, USA. July 17–21, 2011. pp. 1681-1686. ASME. https://doi.org/10.1115/PVP2011-58078
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