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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048143
EISBN: 978-1-62708-235-8
... the last contact was broken was revealed to have resulted in an arc that caused local melting of the metal being plated. The molten metal was interpreted to have been quenched instantly by the plating solution and by the mass of the cold metal of the spring. The hard spot caused by arcing during plating...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001175
EISBN: 978-1-62708-231-0
... inside surface of the boiler was polished and etched with Fry-solution, which revealed parallel striations formed due to the cold bending of the plate. The zones of slip were concentrated around the rivet holes. The cracks were formed here. The structure examination proved that the cracks had taken...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0048819
EISBN: 978-1-62708-233-4
...Abstract Abstract A large pressure vessel that had been in service as a hydrogen sulfide (H2S) absorber developed cracks and began leaking at a nozzle. The vessel contained a 20% aqueous solution of potassium hydroxide (KOH), potassium carbonate (K2CO3), and arsenic. The vessel wall...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001217
EISBN: 978-1-62708-235-8
..., a much coarser network of rod-shaped and plate-shaped precipitates was found, that probably corresponded to the primary grain boundaries, or to the grain boundaries or twin planes of the austenite formed during solidification of the melt. These particles could have been aluminum nitride judging...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001367
EISBN: 978-1-62708-215-0
...% NaOH solution to be ingested by the unit. Routine magnetic particle inspection revealed numerous cracks in the hub area and vane tips of the second-stage impeller Additionally, the outside surface of the backing plate showed a cyclic pattern of cracks. An overview of a conventional, systematic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001722
EISBN: 978-1-62708-236-5
... explanation being lack of “throwing power” of the plating solution in these regions. The primary cause of failure of this crankshaft was the plating of the crankpins. The presence of the grooves alone would result in considerable intensification of stress in zones which are normally highly stressed, while...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003552
EISBN: 978-1-62708-180-1
... Deposits on the Fracture Surface Specify a Proper and Appropriate Hardness Range Specify Proper Heat Treating and Tempering Ensure Good Cleaning Solution Maintenance Ensure Good Plating Solution Maintenance and/or Proper Selection of Plating Bath Composition Ensure Proper Postplating Baking...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... Laboratory Cracking Tests Hydrogen-Induced Blistering Flakes Fisheyes Hydrogen Attack Cracking from Hydride Formation Specify a Proper and Appropriate Hardness Range Specify Proper Heat Treating and Tempering Ensure Good Cleaning Solution Maintenance Ensure Good Plating Solution...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001400
EISBN: 978-1-62708-235-8
... of the absorber vessel was found to be due to stress corrosion. Although the active agent present was not positively identified, the aqueous solution of monoethanolamine was thought to be the most probable. The origin of the stresses was not elucidated but the association of the cracks with the welded seams...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001067
EISBN: 978-1-62708-214-3
... relieved. Longitudinal seams in the same vessel, which had been stress relieved in a furnace, showed no tendency toward cracking. The solution passing through the vessel contained CO2-CO-H20, KHCO, and Cl− ions. Nondestructive testing revealed that the cracks originated in the heat-affected zone...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001492
EISBN: 978-1-62708-235-8
... to the plating operations. The bright dip solution dissolves copper oxides preferentially and does not dissolve any significant amount of the copper alloy. The lead material of a diode package was oxygen-free high-conductivity (OFHC) copper and the leads had 50 µin thick electroless nickel underplating...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001282
EISBN: 978-1-62708-215-0
... the transverse section of the original plate. Because of the end-grain effect, in which more inclusions were exposed on the surface, pickling and passivation processes resulted in severe pitting. Component A was reused after removing the intergranularly attacked layer and conducting re-solution annealing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001520
EISBN: 978-1-62708-235-8
... was ultimately prevented by changing the manufacturing procedure to allow for a reheat treatment, consisting of solution treatment and aging of the machined part just prior to plating. For parts that cracked after pressure testing, excessive dimensional changes precluded the inclusion of a reheat treatment...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001437
EISBN: 978-1-62708-220-4
... 180°, showing that the material away from the cracks still possessed excellent ductility. A strip cut from the plate sample also bent satisfactorily. The information provided regarding the process carried out in the vessel was as follows: The basic solution consisted of a mixture...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001813
EISBN: 978-1-62708-180-1
... in an arc that causes local melting of the metal being plated. Because the motion of the barrel rapidly moves the spring away from the dangler, the spot of molten metal caused by arcing is quenched instantly by the plating solution and by the mass of the cold metal of the spring. Fatigue fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089793
EISBN: 978-1-62708-235-8
... the weld was cold, nondestructive evaluation revealed a large crack adjacent to the root weld. Investigation Conclusion Corrective Measure Acknowledgments Figure 1(a) shows the design of the weld and the region where cracking occurred. The 100 mm (4 in.) thick plate had a chemical...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001819
EISBN: 978-1-62708-180-1
...-to-metal (McKee) Fig. 2 Typical examples for orthopedic internal fixation devices (schematic). (a) and (b) Round hole bone plates (can be used with compression devices). (c) Classical Sherman bone plate. (d) to (g) Dynamic compression plates of various sizes. (h) Compression bone plate with glide...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001571
EISBN: 978-1-62708-229-7
... of the M 23 C 6 should be in solution after 10 minutes at 1000°C. Specimen F-10 experienced about 1025–1050°C based upon the delta ferrite measurements, yet it contained substantial carbide in the cladding. Furthermore, F-10 exhibited eutectic carbide clusters at the plate/base metal interface...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001383
EISBN: 978-1-62708-215-0
...Abstract Abstract Several case-hardened and zinc-plated carbon-manganese steel wheel studs fractured in a brittle manner after very limited service life. The fracture surfaces of both front and rear studs showed no sign of fatigue beach marks or deformation in the form of shear lips that would...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003516
EISBN: 978-1-62708-180-1
..., and visual inspections are regularly accomplished. When choosing a β factor solution, it is necessary to establish the expected crack geometry. In the preceding example for a circular hole with a diametrical crack, it has been implicitly assumed that the crack is through the thickness of the plate, which...