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Weld deposited coatings

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047428
EISBN: 978-1-62708-235-8
... of the dragline bucket were warned against further hardfacing of these teeth. Hard surfacing Weld deposited coatings Steel casting Brittle fracture Surface treatment related failures A cast dragline bucket tooth failed by fracturing after a short time in service. The tooth was made of medium-carbon...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001435
EISBN: 978-1-62708-236-5
... inclusions Shafts (power) Slags Weld defects Weld deposited coatings Welded steel Joining-related failures Fatigue fracture The fracture of the shaft of a 10 h.p. squirrel-cage motor took place at the driving end just outside the roller bearing and not at an abrupt change of section behind...
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
... plate of the exciter should be braced to reduce the amount of transmitted vibration. Also, the fillet in the exciter shaft should be carefully machined to provide an adequate radius. Electric generators Fillet welds Stress concentration Vibration Weld deposited coatings 4130 UNS G41300...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001832
EISBN: 978-1-62708-241-9
... was not found in the weld areas during the deposit analysis. Moreover, the appearance of the pipe suggested proper removal of zinc prior to welding. Additionally, there were no known failures of the pipe during construction, which would be expected if the pipe were embrittled. Zinc-induced liquid metal...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001325
EISBN: 978-1-62708-215-0
... showed quite noticeable external lack of weld bead buildup at this location. The weld was visibly starved of filler metal at this location. The internal surfaces of the piping were found to be coated with columnar crystalline deposits up to approximately 6 mm (0.25 in.) thick, deposited in concentric...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047541
EISBN: 978-1-62708-217-4
... to the throttle-linkage bar by an assembly-weld deposit made on the rod adjacent to the threaded portion. The fracture surface exhibited a coarse-grain brittle texture with an initiating crack at a thread root. The throttle-arm failed by brittle fracture because of the presence of cracks at the thread roots...
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
... side of the weld. The crack opened easily, exposing a fracture surface covered with a white, powdery deposit. Small, reflective, metallic-appearing droplets were observed throughout the white deposit. These droplets are indicated by arrows in Fig. 5 and were identified by energy-dispersive...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0046911
EISBN: 978-1-62708-227-3
... in submerged arc welding was high in silicon and that the large amount of weld metal deposited in a single pass remained molten long enough to dissolve much larger amounts of silicon than could be dissolved in manual shielded metal arc welding. Furthermore, the coating on the welding rods used in shielded...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003556
EISBN: 978-1-62708-180-1
... the corrosion process by the rapid regeneration of MnO 2 ( Eq 10 ) ( Ref 28 ). Manganese-oxidizing organisms have been implicated in the MIC of 304L stainless steel welds ( Ref 29 ). Formation of manganic oxide ennobles the potential of stainless steel in natural waters ( Ref 30 ). Ennoblement shifts...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
... tensile stresses from forming operations or welding can reduce fatigue endurance. Residual compressive stresses have been intentionally introduced by shot peening to reduce the effective peak stress. To prevent HCF failures, shot peening would have to lower the effective stress below the endurance limit...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001825
EISBN: 978-1-62708-241-9
... faces of the crack surface still intact. The fracture surfaces of cracks B and C were coated with black and green nonmetallic deposits. On the surface of crack B, there were rachet marks along the toe of the weld ( Fig. 3 ). One portion of the exposed crack surface had a thumbnail-shaped region...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001176
EISBN: 978-1-62708-229-7
... was in clear contrast with the red coating on the rest of the inner surface. The other pipe section (No. 2) also contained a circumferential welding joint. The cross-sectional cut was situated approx. 10 mm from the bead. After the section was cut longitudinally, the welding seam, in contrast to the first...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
... areas was so extensive that whole sections of the impeller had to be cut out and replaced with fabricated pieces in the shop. Fig. 15 Accelerated cavitation erosion and cracking associated with austenitic stainless steel weld deposits on a martensitic stainless steel (CA-15) impeller vane...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
... with ASTM 89 reagent. The pit was not associated with a welded region, and the microstructure appeared normal. There was no evidence of general wall loss (uniform corrosion). Conclusion The pitting in the austenitic stainless steel pipe is believed to be caused by damage to the passive layer brought...
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
... may include, but is not limited to: Date of installation Piping material grade Diameter and wall thickness Seam weld type (if any) Coating type Cathodic protection information Previous hydrotest results (including dates, pressures, and times) In-line inspection results...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001392
EISBN: 978-1-62708-231-0
.... It is satisfactory to note that, in the replacement ring, the form of the Tee joint was modified to incorporate a full penetration butt and fillet weld. A further contributory factor was provided by the 1 16 in. thick scale which had been deposited on the furnace ring during service, and this served...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
... in tube metal temperatures. In a superheater or a reheater, such temperature increases can lead to premature creep failures, dissimilar-metal weld failures, and accelerated ash corrosion or oxidation. In furnace walls, deposits may also lead to hydrogen damage (additional information is provided...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
... the resistance of the current path in the solution and the external circuit. Thus, if dissimilar pipes are butt welded with the electrolyte flowing through them, the most severe corrosion will occur adjacent to the weld on the anodic member. Effect of Shape The geometry of the circuit elements determines...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006788
EISBN: 978-1-62708-295-2
... regeneration of MnO 2 ( Ref 38 , 42 , 43 ): (Eq 7) H 2 O + ½ O 2 + Mn 2 + → MnO 2 + 2H + Manganese-oxidizing bacteria (MnOB) have been implicated in the corrosion of 304L stainless steel welds ( Ref 44 ). The pitting of stainless steel in natural waters has been linked...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... of deposition on the interior tube wall. Caustic corrosion (also referred to as caustic gouging, caustic attack, and ductile gouging) occurs in water-cooled high-heat-flux tube regions, slanted and horizontal tubes, locations beneath heavy deposits, heat-transfer regions at or adjacent to weld backing rings...