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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001780
EISBN: 978-1-62708-241-9
... Abstract A number of failures involving carbon and alloy steels were analyzed to assess the effects of inclusions and their influence on mechanical properties. Inclusions, including brittle oxides and more ductile manganese sulfides (MnS), affect fatigue endurance limit, fatigue crack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.9781627082259
EISBN: 978-1-62708-225-9
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001504
EISBN: 978-1-62708-217-4
... analysis reports were surveyed to provide an overview of structural landing gear component failures as experienced by the Canadian Forces over the last 20 years on more than 20 aircraft types, and to assess trends in failure mechanisms and causes. Case histories were selected to illustrate typical problems...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001707
EISBN: 978-1-62708-217-4
... Abstract The failures of two aircraft components, one from a landing gear and the other from an ejector rack mechanism, were investigated. Both were made from PH 13-8 Mo (UNS S13800) precipitation-hardening stainless steel which had been heat treated to the H1000 and H950 tempers respectively...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
... Abstract This article focuses on the life assessment methods for elevated-temperature failure mechanisms and metallurgical instabilities that reduce life or cause loss of function or operating time of high-temperature components, namely, gas turbine blade, and power plant piping and tubing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001583
EISBN: 978-1-62708-217-4
... at the required aging temperature and follow-up mechanical testing. Army aviation Flight safety critical component Metallurgical investigation PH 13-8Mo UNS S13800 Heat treating-related failures Metalworking-related failures Selected...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001827
EISBN: 978-1-62708-241-9
... Abstract Gas turbines and other types of combustion turbomachinery are susceptible to hot corrosion at elevated temperatures. Two such cases resulting in the failure of a gas turbine component were investigated to learn more about the hot corrosion process and the underlying failure mechanisms...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001746
EISBN: 978-1-62708-217-4
... mechanism. As for the factors involved, cadmium plating, acid pickling, and steelmaking processes introduce hydrogen on part surfaces. As a second contributing factor, both bolts were 10 Rc points higher in hardness than specified (25 Rc), lessening ductility and notch toughness. A third factor...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047975
EISBN: 978-1-62708-225-9
... by contact fatigue mechanism (flaking) activated by the subsurface nonmetallic inclusions. Aircraft components Bearing races Flaking Transmissions (sutomotive) Bearing steel Fatigue fracture Rolling-contact wear The pilot of an aircraft reported illumination of the transmission oil-pressure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001625
EISBN: 978-1-62708-218-1
... of processing fluids and/or cleaning agents, were left on the surface just prior to painting and resulted in the observed fisheye blemishes. One of the components also showed evidence of mechanical damage, in addition to detectable iron, which suggests that the part surface may have been damaged from contact...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089256
EISBN: 978-1-62708-235-8
... Abstract Alloy steel forgings used as structural members of a ski chair lift grip mechanism were identified to have contained forging laps (i.e., sharp-notched discontinuities) during an annual magnetic particle inspection of all chair lift grip structural members at a mountain resort...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001688
EISBN: 978-1-62708-234-1
... Abstract Some examples of equipment failures involving high temperature operation are presented. They include some steam generator superheater components and a pump shaft that should not have been at high temperature. Metallographic analysis is used to determine the causes of failure in each...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001163
EISBN: 978-1-62708-234-1
..., as well as the mechanical stressing of the component are no higher than absolutely necessary. From the material side, the danger of stress corrosion cracking in the austenitic chromium nickel stainless steels can be reduced by replacing them with grades containing over 20% nickel. In more severe cases...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001674
EISBN: 978-1-62708-234-1
... Hydrogen cyanide Weapons Gold 37.5Pb-37.5Sn-25In (Other, general, or unspecified) corrosion The problem of corroding gold bridgewires was first detected during surveillance of long-term accelerated aged components. Accelerated aging of gold bridgewired detonator assemblies at temperatures of 74 C...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003512
EISBN: 978-1-62708-180-1
... the performance and design life of a component depends on defining what life or performance is required for a given duration while the component operates generally in combinations of mechanical and chemical environments. Defining performance may involve defining end points such as: acceptable length...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001758
EISBN: 978-1-62708-241-9
... mechanisms. Fig. 7 Entirely interdendritic stress-rupture fracture observed on the trailing edge of a solid equiaxed turbine blade casting. Note irregular nature of crack front in middle of fracture commonly observed on fractures possessing a creep component during propagation An example...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001812
EISBN: 978-1-62708-241-9
...) References 1. Plinius Secundus C. (or Pliny): The History of the World Commonly Called The Natural History , translated by Holland. P. pp. 364 – 365 . McGraw-Hill ( 1964 ) 2. Lynch S.P. : Failures of structures and components by environmentally assisted cracking . Eng...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001819
EISBN: 978-1-62708-241-9
... of components operating in the petrochemical industry for some reasons, mainly due to their excellent resistance to corrosion coupled with good mechanical properties. Nevertheless, some factors can lead to the failure of components, even if fabricated with an adequate material. In the present study, two...
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
..., the corrosion process continued between cracks and separated the plating. Such a failure mechanism was duplicated using laboratory exemplars of the diodes. It was concluded that plating cracks and flaking were due to improper handling rather than a plating anomaly per se. Fig. 2 Cross-section of an OFHC...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... helps the failure analyst gain an understanding of how the component or system responded to the applied forces. Also, because some mechanical properties can be correlated, tests such as hardness and microhardness of steels can be used to gain an understanding of tensile strength, especially when...