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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001612
EISBN: 978-1-62708-218-1
... that the premature failure of the fan was due to inadequate bonding between the sheets at the weld nugget. The fracture was initiated from the nugget-plate interface. The inadequate penetration and lack of fusion between the steel sheets during resistance spot welding led to poor weld strength and the fracture...
Book Chapter

By C. Howard Craft
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001017
EISBN: 978-1-62708-219-8
... steel with carbon content toward the high side of the range. The mechanical properties of the parent metal in split and unsplit lengths were satisfactory. Weld strength, on the other hand, without removal of reinforcement was about 70% of parent metal strength in areas immediately adjacent to one...
Image
Published: 30 August 2021
Fig. 38 Fatigue strength as a function of slag inclusions for as-welded carbon-manganese steel More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047072
EISBN: 978-1-62708-217-4
... the shell in the annealed condition. During welding, the weld zones distorted under the welding pressure and increased the contact area, which changed the current distribution and resulted in low or inconsistent weld strength. Conclusion The outer shell of the bullet assembly separated from...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
... as the heat input of the process are not addressed in detail. Planar Imperfections Planar imperfections are sharp cracklike features that can substantially reduce the fatigue strength of a welded joint or cause initiation of brittle fractures. Examples include hydrogen cracks, lamellar tears, lack...
Book Chapter

By Thomas L. Proft
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001041
EISBN: 978-1-62708-214-3
... to be fatigue cracking that initiated at the toes of the fillet welds. Secondary fatigue cracking occurred at the torque rod mounting holes. Failure was attributed to cyclic stresses at the weld toes that exceeded the lowered fatigue strength at this location. A design change that eliminated the fillet welds...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0047694
EISBN: 978-1-62708-219-8
... Abstract Extra high strength zinc-coated 1080 steel welded wire was wound into seven-wire cable strands for use in aerial cables and guy wires. The wires and cable strands failed tensile, elongation, and wrap tests, with wires fracturing near welds at 2.5 to 3.5% elongation and through...
Book Chapter

Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001430
EISBN: 978-1-62708-236-5
... to heat-affected zone cracking, residual stresses, the lower fatigue strength of the weld deposited metal, and weld defects. Repair welding Shafts (power) Weld defects Fe-0.6C Joining-related failures Fatigue fracture It is true to say that the construction of engineering plant — vessels...
Book Chapter

Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0090943
EISBN: 978-1-62708-219-8
... that consisted of both dimple rupture and grain-boundary dimple-rupture evidence. The base metal exhibited rather large-grain intergranular brittle cracking features with many types of inclusions. Chemical analysis revealed a standard high-strength, manganese bronze composition, and the weld filler metal...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001210
EISBN: 978-1-62708-227-3
... was a construction steel of 60 to 75 kp/sq mm strength. Thick-walled parts of steels of such high strength must be preheated to approximately 200 deg C along the edges prior to welding to minimize the strong heat losses by the cold mass of the part. In the case under investigation this either was not done at all...
Book Chapter

By Friedrich Karl Naumann, Ferdinand Spies
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001204
EISBN: 978-1-62708-219-8
... outside of the weld seam closely under the head. Neither one had been particularly deformed before fracture. The composition of the head pieces corresponded approximately to manganese steel (Material No. 1 0845), a weldable construction steel with increased yield point and strength, while the shafts were...
Book Chapter

By Jorge J. Perdomo, Luis A. Ganhao
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006808
EISBN: 978-1-62708-329-4
... the test sample is completed, a mechanical test of some sort is typically made to demonstrate that the two materials being welded have at least the minimum tensile strength of one of the two being joined. Also, ductility of the weld is frequently tested by means of weld bend tests to demonstrate...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048782
EISBN: 978-1-62708-235-8
... Several sections through a girth weld in a field steam accumulator showing lack of weld penetration. A hardness traverse on the shell yielded values from 84.1 to 86.5 HRB, corresponding to an approximate tensile strength of 550 MPa (80 ksi), which is within the 515- to 620-MPa (75- to 90-ksi) range...
Book Chapter

By A. Hudgins, C. Roepke, B. James, B. Kondori, B. Whitley
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006822
EISBN: 978-1-62708-329-4
... penetration Inclusions Undercut Toe cracks Solidification cracks Girth-weld-specific flaws Low strength Hydrogen-assisted cold cracking Mechanical damage Gouges Dents Wrinkles External corrosion Uniform corrosion Localized corrosion Selective seam weld corrosion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001570
EISBN: 978-1-62708-220-4
.... The primary objective of tube expansion in tubesheet is to increase the residual contact pressure and thus increase the holding strength of the joints. The expanded joint should hold and guide the tube in the tube hole to eliminate the undesirable longitudinal load imposed by exchanger tube on the seal weld...
Book Chapter

Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0047423
EISBN: 978-1-62708-236-5
... not been used to make the weld. Repair welds in high-strength steel castings should always be made with low-hydrogen filler materials. Filler metals Heat affected zone Repair welding Fe-0.18C-1.37Ni-0.42Cr-0.31Mo Fatigue fracture Joining-related failures A large shackle used in operating...
Book Chapter

Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048733
EISBN: 978-1-62708-235-8
... for the heater-shell wall between the welds and the hot well outside the welds. These values exceeded the actual yield strength of the shell material at operating pressures of 331 kPa (48 psi) and greater. The material was no longer in the elastic region, and it deformed plastically to relieve or transfer...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001264
EISBN: 978-1-62708-215-0
... the condition of the material adjacent to the welds and substantially reduced yield strength, tensile strength, and attendant fatigue strength. The welds were placed at the point on the plate that experienced the most severe bending stresses in service. Thus, the plate was made weakest in the area where...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047508
EISBN: 978-1-62708-221-1
... Abstract A riveted 0.25% carbon steel oil-storage tank in Oklahoma was dismantled and reassembled in Minnesota by welding to form a storage tank for soybean oil. An opening was cut in the side of the tank to admit a front-end loader. A frame of heavy angle iron was welded to the tank...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001682
EISBN: 978-1-62708-229-7
... from the Weld. The tensile tests of the portions of the bellows convolutes demonstrated that neither the welding nor the liquation cracking of the HAZ reduced the strength of the bellows. Three types of flat, reduced section test samples were prepared: base metal samples, samples which had...