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weld discontinuities

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930057
EISBN: 978-1-62708-359-1
... Abstract Discontinuities are interruptions in the desirable physical structure of a weld. This article describes the types of weld discontinuities that are characteristic of the principal welding processes. Discontinuities covered are metallurgical discontinuities, discontinuities associated...
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Published: 01 July 1997
Fig. 5 Weld discontinuities affecting weld shape and contour. (a) Undercut and overlapping in a fillet weld. (b) Undercut and overlapping in a groove weld. (c) and (d) Underfill in groove welds More
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Published: 01 April 2013
Fig. 5 Weld discontinuities affecting weld shape and contour. (a) Undercut and overlapping in a fillet weld. (b) Undercut and overlapping in a groove weld. (c) and (d) Underfill in groove welds. Source: Ref 1 More
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Published: 01 November 2012
Fig. 19 Weld discontinuities affect weld shape and contour. (a) Undercut and overlapping a fillet weld. (b) Undercut and overlapping in a groove weld. (c) and (d) Underfill in groove welds. Source: Ref 14 More
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Published: 01 November 2011
Fig. 5.20 Weld discontinuities affect weld shape and contour: (a) undercut and overlapping a fillet weld, (b) undercut and overlapping in a groove weld, and (c) and (d) underfill in groove welds. Source: Ref 5.9 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820013
EISBN: 978-1-62708-339-3
... and heat-affected zone (HAZ), solid-state phase transformations during welding, control of toughness in the HAZ, the effects of preheating and postweld heat treatment, and weld discontinuities. This chapter provides information on the classification of steels and the welding characteristics of each class...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610585
EISBN: 978-1-62708-303-4
... Abstract This appendix provides detailed information on design deficiencies, material and manufacturing defects, and service-life anomalies. It covers ingot-related defects, forging and sheet forming imperfections, casting defects, heat treating defects, and weld discontinuities. It shows how...
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Published: 01 July 1997
Fig. 2 Conceptual drawing of fatigue crack initiation and growth at the toe of (left) a “Nominal” groove welded butt joint having a substantial (⋍0.1 in. depth) weld discontinuity (slag entrapment) at the root of the critical notch (weld toe) and (right) an “Ideal” weldment with good wetting More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930141
EISBN: 978-1-62708-359-1
... Material properties Geometrical stress concentration effects Size and location of welding discontinuities but there is often disagreement as to the relative importance of each. This article is intended to help engineers understand why the fatigue behavior of weldments can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720411
EISBN: 978-1-62708-305-8
... Abstract Weldments made by the various welding processes may contain discontinuities that are characteristic of that process. This chapter discusses the different welding processes as well as the discontinuities typical of each process. It provides a detailed discussion on the methods...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130503
EISBN: 978-1-62708-284-6
... Abstract Failure analysis of steel welds may be divided into three categories. They include failures due to design deficiencies, weld-related defects usually found during inspection, and failures in field service. This chapter emphasizes the failures due to various discontinuities in the steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290099
EISBN: 978-1-62708-306-5
... after welding Precipitation hardened: martensitic (17-4 PH, 13-8 Mo, 15-5 PH) Very weldable, similar to austenitic Use austenitic filler if high strengths are not required Age single-pass welds to full strength Use compatible filler 5.6 Overview of Weld Discontinuities Weld...
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Published: 01 September 2008
Fig. 1 Schematic illustration of common types of discontinuities in welds. Reproduced with permission of the American Welding Society. See also Table 1 . Source: Ref 1 More
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Published: 01 July 1997
Fig. 1 Defects and discontinuities in welded joints More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930163
EISBN: 978-1-62708-359-1
... high-temperature creep plastic collapse weld discontinuities IT IS GENERALLY ACCEPTED THAT all welded structures enter service containing flaws that can range from volumetric discontinuities, such as porosity or slag inclusions, to planar defects, such as a lack of side-wall fusion or hydrogen...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610263
EISBN: 978-1-62708-303-4
... where fatigue failures are likely to occur in cold-driven rivet and friction joints, and why the fatigue strength of welded joints can be much lower than that of the parent metal, depending on weld shape, joint geometry, discontinuities, and residual stresses. The chapter also explains how to improve...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930085
EISBN: 978-1-62708-359-1
... Abstract Welded joints in any component or structure require a thorough inspection. The role of nondestructive evaluation (NDE) in the inspection of welds is very important, and the technology has become highly developed as a result. This article describes the applications, methods, evaluation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200197
EISBN: 978-1-62708-354-6
..., abrasive blast cleaning, removal of risers, ingates, and discontinuities, rough inspection, removal of discontinuities, finishing welding, heat treatment, and final visual, dimensional, and NDT inspection. This chapter provides a detailed discussion on these activities. finishing heat treatment...
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Published: 01 October 2011
Fig. 7.27 Electromagnetic yoke, showing position and magnetic field to detect discontinuities parallel to a weld bead. Discontinuities across a weld bead can be detected by placing the contact surfaces of the yoke next to and on either side of the bead (rotating yoke about 90° from position More
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Published: 01 April 2013
Fig. 7 Electromagnetic yoke, showing position and magnetic field to detect discontinuities parallel to a weld bead. Discontinuities across a weld bead can be detected by placing the contact surfaces of the yoke next to and on either side of the bead (rotating yoke about 90° from position shown More