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RESEARCH PAPER

Residual Stresses and Distortion in Boiler Tube Panels With Welded Overlay Cladding

[+] Author and Article Information
B. Yildirim

Department of Mechanical Engineering, Osmangazi University, Eskisehir, Turkey, 26480

H. F. Nied

Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015

J. Pressure Vessel Technol 126(4), 426-431 (Dec 01, 2004) (6 pages) doi:10.1115/1.1804198 History: Received June 28, 2003; Revised June 25, 2004; Online December 01, 2004
Copyright © 2004 by ASME
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References

Figures

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Cross-section of boiler tube waterwall panel with weld overlay cladding
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Geometry, boundary conditions and a typical mesh used in simulation of overlay welding of boiler tubes, Tambient=20°C
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Schematic depicting the overlay welding process applied to bead-on-plate welding and the coordinate system used in this study
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(a) Temperature distribution of five points on the boiler panel during deposition of the first weld bead; and (b) temperature distribution of five points on the boiler panel after deposition of the first weld bead
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Transient temperature distribution during deposition of the first weld bead
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Transient temperature distribution following the deposition of the sixth weld bead on the surface of the first boiler tube
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Finite element mesh used in the thermal and mechanical analyses of the sixth weld bead showing exaggerated distortion after cooling to room temperature (scale=40×)
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The circumferential stress distribution in the overlay metal and the boiler tube panel after weld deposition on the second boiler tube surface
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Von Mises stress distribution in the overlay metal and the boiler tube panel after weld deposition on the second boiler tube surface
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Plastic strain distribution in the overlay metal and the boiler tube panel after weld deposition on the second boiler tube surface
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Residual stress distribution along the centerline (a−a) of the first weld overlay
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Plastic strain distribution along the centerline (a−a) of the first weld overlay
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Vertical and horizontal displacement of extreme right edge of 3-tube boiler panel

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