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gas-metal arc welding

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047392
EISBN: 978-1-62708-221-1
... and gas metal arc welding; neither preheating nor postheating was specified. The filler metal was E70S-6 continuous consumable wire with a copper coating to protect it from atmospheric oxidation while on the reel. Analysis of the two castings revealed that the carbon content was higher than specified...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001304
EISBN: 978-1-62708-215-0
... solidification cracks. The joints had been produced using the mechanized gas-metal arc welding process. Cracking was attributed to improper control of welding parameters, and failure was attributed to weld defects. Air intakes Corrosion-resistant steels Diffusers Exhaust systems Low-cycle fatigue...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047602
EISBN: 978-1-62708-235-8
... of the stainless steel in an area under residual tensile stress. The copper for the fixtures was replaced by aluminum. No further cracking was encountered. Gas tungsten arc welding Grain boundaries Heat affected zone Residual stress Tensile stress 21Cr-6Ni-9Mn Liquid metal induced embrittlement...
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
...Abstract Abstract A welded elbow assembly (AISI type 321 stainless steel, with components joined with ER347 stainless steel filler metal by gas tungsten arc welding) was part of a hydraulic-pump pressure line for a jet aircraft. The other end of the tube was attached to a flexible metal hose...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0091048
EISBN: 978-1-62708-235-8
...Abstract Abstract A welded ferritic stainless steel heat exchanger cracked prior to service. The welding filler metal was identified as an austenitic stainless steel and the joining method as gas tungsten arc welding. Investigation (visual inspection, SEM images, 5.9x images, and 8.9x/119x...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001339
EISBN: 978-1-62708-215-0
... Aluminum alloy 5083-O was the specified seamless pipe composition, and the weld filler metal was 5183. The ASTM designation of the alloy piping is not known. Either the gas tungsten are or gas metal arc welding process was used to make the butt weld where the failure occurred. Specimen Selection...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0047558
EISBN: 978-1-62708-236-5
.... The shaft was polished, the pulley was bored out, and a bushing was inserted, but after indeterminate service, the pulley turning recurred. At this time, the shaft was removed for resurfacing. After belt grinding, the keyway was filled in and the surface of the shaft was built up by gas metal arc welding...
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
... at the weld toe Cracks—hot or cold, longitudinal or transverse, crater and at weld toe Gas porosity Arc strike Spatter Backing piece left on: failure to remove material placed at the root of a weld joint to support molten weld metal Subsurface features that are causes for rejection...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047598
EISBN: 978-1-62708-217-4
... copper sulfate (Strauss test). These specimens showed separation of the gas tungsten arc weld from the base metal with complete dissolution of the HAZ. A specimen from the resistance seam weld remote from the gas tungsten arc weld showed only scattered superficial surface attack (as deep as 0.06 mm...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001647
EISBN: 978-1-62708-235-8
... Impurities in base metal Chemistry analysis does not meet specification. Random distribution of porosity Moisture in shield gas Gas analysis does not meet specification. Random distribution of porosity Improper shield gas Gas analysis does not meet specification. Random distribution...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0047645
EISBN: 978-1-62708-229-7
... was confirmed by metallographic examination of longitudinal sections transverse to the weld and the crack ( Fig. 1b ). The brittleness of this layer (48 to 52 versus 29 to 33 HRC for the base metal) caused transgranular cracks to form and propagate in tension under the thermal stresses created by the repair...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047641
EISBN: 978-1-62708-235-8
... of transverse cracks in the fusion zone and HAZ. 3x. (b) Fracture origin (top) formed by welding stresses on the contaminated weld metal. The light region below the origin is the rupture that occurred during the proof test. Approximately 5x The fracture origin was at a surface crack, similar to those...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047636
EISBN: 978-1-62708-217-4
... was between 6 months and 1 year. Two subassemblies were returned to the laboratory for determination of cause of failure. In one ( Fig. 1a ), the threaded boss had separated from the elbow at the weld made with the gas tungsten arc process using aluminum alloy 4043 filler metal. In the second, the failure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001820
EISBN: 978-1-62708-180-1
... of extraneous metals. (b) These arc a problem in gathering lines carrying sour gas (gas containing H 2 S). Controlling parameters and predicted failure modes for three assumed defect lengths Table 2 Controlling parameters and predicted failure modes for three assumed defect lengths Defect2 c...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047590
EISBN: 978-1-62708-217-4
... thin outer surface lip on the adapters to ensure concentric alignment with the tube. This outer lip was fused during welding, eliminating any need for filler metal. This procedure has been successful in preparing weld beads with good penetration and smooth root and weld-face contours, particularly when...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0047621
EISBN: 978-1-62708-229-7
... • Fatigue Failures , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 2002 , p 700 – 727 10.31399/asm.hb.v11.a0003544 Microscopic examination of the fracture site revealed unfused weld metal surfaces and severe undercutting of the base material of the stiffener...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001837
EISBN: 978-1-62708-241-9
..., in this case small cracks were detected by radiography and dye penetrant testing in the vicinity of the weld metal after welding. These cracks were not observed during visual inspection. At this stage it was not confirmed that whether cracks were produced during welding or formed after welding and therefore...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001028
EISBN: 978-1-62708-214-3
... in Structures , Prentice-Hall , 1987 , Chap 2.3. 2. Metals Handbook , 9th ed. , Vol 11 , American Society for Metals , 1986 , p 47 . Selected References Selected References • Failures Related to Welding , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001667
EISBN: 978-1-62708-235-8
... of the Ti-6Al-4V parent material of the weldment taken from (A) the discolored test plate and (B) surface replica of the cylinder weldment. The microstructure of the weld metal consisted entirely of alpha prime, Figure 6 . The inner edge of the HAZ adjacent to the weld metal consisted of serrated...