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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001018
EISBN: 978-1-62708-217-4
... Cr-V steel flat spring attached at the top end to the fuselage and at the bottom end to the axle. Failure occurred at the clamping point near the top end of this spring. The failure showed evidence of severe brinelling at one corner in the clamping area. The fracture surfaces were clean, fresh...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001706
EISBN: 978-1-62708-217-4
... on the steel substrate respectively. Application of a corrosion-inhibiting compound (CPC) on top of the painted surfaces would ensure additional protection against moisture and aggressive environment. Chemical analysis of the coatings at different locations on the inner and external surfaces of the beam...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001439
EISBN: 978-1-62708-235-8
... compound, nickel phosphide. The use of a brazing alloy containing phosphorus was unsuitable on two counts and a quaternary alloy containing silver, copper, cadmium and zinc, such as those in group AG1 or AG2 of BS 1845 would be more suitable. However, because corrosive problems experienced in these units...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046217
EISBN: 978-1-62708-217-4
... Abstract An aluminum alloy propeller blade that had been cold straightened to correct deformation incurred in service fractured soon after being returned to service. Visual examination revealed that crack initiation occurred at the top surface in an area containing numerous surface pits...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001331
EISBN: 978-1-62708-215-0
... time steam flowed through the length of pipe was during startup or shutdown procedures. A sealer compound (composition unknown) was periodically pumped into the steam to seal leaky valve stems in the system. Pertinent Specifications P22 low-alloy steel was specified for this application...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001058
EISBN: 978-1-62708-214-3
... was injured by a flying fragment of the plug. Fig. 1 Reassembled pieces of the plug, showing the remains of Teflon in the threads at the bottom of the plug and deposit-filled threads at top. Note missing portion of threads. 2.3×. Fig. 2 Same as Fig. 1 , shown at a slight angle to accentuate...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001284
EISBN: 978-1-62708-215-0
... Abstract Compound bow handle risers that had failed in service and during assembly along with an unassembled riser were submitted for analysis. The risers were die cast from magnesium-base alloy AM60A. Inspection of the failed risers and metallurgical investigations conducted on the stock riser...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0091757
EISBN: 978-1-62708-232-7
... mostly of nickel sulfide) in the chromium-depleted region (bright phase). Dark, outer region contains cavities, corroded metal, and various debris, including mounting compounds. Far left region (not shown) is base metal. Micrograph shows an area approximately 6 mm (0.24 in.) wide. Courtesy of Mohan...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001616
EISBN: 978-1-62708-229-7
... species on the tubes in Stage 3. The complete failure of the tube occurred due to diffusion of these elements into the base metal and precipitation of potassium and chlorine compounds along the grain boundaries, with subsequent dislodging of grains. The nonmetallic inclusions acted as nucleating sites...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001814
EISBN: 978-1-62708-241-9
...-lined combustion chamber and a lower water quench chamber. The gasifier feed is a high concentration water slurry of petroleum coke containing minor additives. This slurry is injected into the top of the gasifier where it reacts with oxygen at high pressure and temperature, producing synthesis gas...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001629
EISBN: 978-1-62708-235-8
... and oxygen, indicative of organic compounds. Coolant 1 was found to contain small amounts of sulfur and phosphorus along with carbon and oxygen. Coolant 2 contained relatively small levels of aluminum, sodium, sulfur, phosphorus, and chlorine, along with high carbon and oxygen. The detergent was primarily...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001309
EISBN: 978-1-62708-215-0
... Member Intersection Methods The joining methods for the frame tubes compound both the fatigue and impact loading problems. Where tubes intersected, one was cut straight and placed on top of the other. The resulting gaps were filled with welding rod, a practice that should be avoided. The proper...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001713
EISBN: 978-1-62708-220-4
... the agitator bar and the compounds being mixed. Heat, from either mechanical friction or the decomposition of sodium hydrosulfite in water, is all that was required to initiate the self-sustaining exothermic reactions with the material in the vessel. Our part on the accident team was to investigate...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001321
EISBN: 978-1-62708-215-0
... on the crown of the top tubes and located in an area near the upward bend of the tube. The inside of all the tubes were covered with a loosely adherent, black, alkaline, powdery deposit comprised mainly of magnetite. The corroded areas, however, had relatively less deposit. The morphology of the corrosion...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001328
EISBN: 978-1-62708-215-0
... in the exhaust stack breeching moves the combustion air. An endothermic catalytic reforming process runs in the catalyst-filling tubes. Gas (2.07 to 2.41 MPa at 450 to 550 °C, or 300–350 psig at 842 to 1022 °F) flows from an inlet manifold system in the top of the furnace through inlet pigtails at the tops...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006827
EISBN: 978-1-62708-329-4
... at the assembly level. This article covers the properties of solder alloys and the corresponding intermetallic compounds. It includes the dominant failure modes introduced during the solder joint manufacturing process and in field-use applications. The corresponding failure mechanism and root-cause analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001543
EISBN: 978-1-62708-218-1
... with a carbide compound, providing it with a heat-resistant material where temperatures are extremely high. Second, pistons could be of an aluminum-graphite or aluminum-boron composite, eliminating surface melting because pure aluminum has a melting point 200 F higher than the interdendritic material...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006914
EISBN: 978-1-62708-395-9
... method is generally more cost-effective. Flame-retardant additives include antimony trioxide, chlorine and bromine compounds, phosphorus compounds, and aluminum trihydrate ( Ref 3 ). However, there have been increasing concerns over the potential toxicity of flame-retardant additives ( Ref 4 , 5...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001096
EISBN: 978-1-62708-214-3
... jagged areas) and MnS 2 inclusions (round gray spots) are visible. Unetched. 154×. Fig. 4 Higher magnification, etched view of Fig. 3 , showing crack (large black jagged area at top left), pearlite (black irregular fuzzy areas), and probably iron carbide precipitates (scattered jagged lines...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001767
EISBN: 978-1-62708-241-9
... for further evaluation. Fig. 2 The top section of a representative fractured bracket Fig. 3 The bottom section of the fractured bracket shown in Fig. 2 Fig. 4 The fracture surface of the bracket shown in Fig. 2 The bracket was sectioned for examination of the fracture...