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Welded joints

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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001350
EISBN: 978-1-62708-215-0
... Abstract Upon arrival at the erection site, an AISI type 316L stainless steel tank intended for storage of fast breeder test reactor coolant (liquid sodium) exhibited cracks on its shell at two of four shell/nozzle fillet-welded joint regions. The tank had been transported from the manufacturer...
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Published: 01 January 2002
Fig. 2 Schematic of defects and discontinuities in welded joints More
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Published: 01 January 2002
Fig. 12 Examples of stress concentrations in welded joints More
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Published: 30 August 2021
Fig. 3 Schematic of defects and discontinuities in welded joints More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001407
EISBN: 978-1-62708-220-4
... magnitude, were responsible. As all other welds were suspect, the remedy was to remove the joints and to reweld followed by local stress relief. Butt welds Caustic soda Corrosion environments Pipes Residual stress Sodium hydroxide Stress relieving Welded steel Intergranular fracture Stress...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001411
EISBN: 978-1-62708-234-1
... Abstract A welded joint between lengths of 4 in. OD x 13 SWG copper pipe which formed part of a cold-water main failed by cracking over one-third of the circumference. Microscopic examination of the filler metal showed that it had a structure corresponding to a brass of the 60:40 type commonly...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001186
EISBN: 978-1-62708-234-1
... Welded joints Wire Cold-drawn steel Ductile fracture A steel wire of 2.3 mm diameter broke during cable twisting. The fracture occurred obliquely to the longitudinal axis of the wire and showed a constriction at the end. Therefore it was a ductile fracture. File mark type work defects were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089738
EISBN: 978-1-62708-235-8
... that the crack in the header tube was the result of a stress concentration at the toe of the weld joining a doubler collar to the tube. The stress concentration was caused by undercutting from poor welding technique and an unfavorable joint design that did not permit a good fit-up. Recommendations included...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0089722
EISBN: 978-1-62708-217-4
... Butt welds Design Elbows Fatigue cracking Lap welds Tubes Vibratory stresses Welded joints 321 UNS S32100 Joining-related failures Fatigue fracture The welded elbow assembly shown in Fig. 1 was part of a hydraulic-pump pressure line for a jet aircraft. The other end of the tube...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048356
EISBN: 978-1-62708-229-7
... Abstract Welded to the top of a dust bin for rigid support, a furnace water-wall tube in a new stationary boiler broke at the welded joint shortly after start-up. The tubes measured 64 mm (2.5 in.) OD by 3.2 mm (0.125 in.) wall thickness and were made of carbon steel to ASME SA-226...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001594
EISBN: 978-1-62708-229-7
... Abstract Nuclear power plants typically experience two or three high-cycle fatigue failures of stainless steel socket-welded connections in small bore piping during each plant-year of operation. This paper discusses fatigue-induced failure in socket-welded joints and the strategy Texas...
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Published: 01 June 2019
Fig. 2 Photomacrograph of a cross section through a socket-welded joint. Notice the straight fatigue crack that initiated from the weld root and extended through the weld metal. More
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Published: 01 June 2019
Fig. 1 Failure of double fillet welded joint between vane and back plate disclosing lamellar tearing. More
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Published: 01 June 2019
Fig. 1 Schematic of weld joint geometry, noting the location of the observed cracking More
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Published: 01 June 2019
Fig. 27 Local attack at fusion welded joint More
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Published: 01 June 2019
Fig. 28 Scale build up and minor attack at flash welded joint More
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Published: 01 December 2019
Fig. 3 Macrographs of AISI 304 SS weld joints showing various zones with cracks: ( a ) “lightning” cracks in base metal, and (b) cracks in weld bead and HAZ (magnification: 5×) More
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Published: 01 December 2019
Fig. 4 Microhardness profile of weld joint showing hardness variation in different zones More
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Published: 01 December 2019
Fig. 5 Micrographs of AISI 304 SS weld joints showing ( a ) dendritic structure in WM with transgranular cracks, ( b ) fusion boundary, ( c ) fine equiaxed grains in HAZ, ( d ) transgranular cracks in coarse HAZ, ( e ) transgranular cracks in BM, ( f , g ) intergrain and grain boundary Cr More
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Published: 01 December 2019
Fig. 14 Metallographic cross section remote of weld joint depicting smaller grain size. (Color figure online) More