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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0090439
EISBN: 978-1-62708-220-4
... with the specified material and, as a result, was not as thermally stable as the reference material. Chemical composition Feedstock Molding resins Plasticizers Thermal analysis Tubing (nonmetal) Tubings Polyvinyl chloride (Other, general, or unspecified) processing-related failures A...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047387
EISBN: 978-1-62708-225-9
.... Chemical composition Gear teeth Hardenability Sprockets Low-alloy steel (Other, miscellaneous, or unspecified) failure Induction-hardened teeth on a sprocket cast of low-alloy steel wore at an unacceptably high rate. A surface hardness of 50 to 51 HRC was determined; 55 HRC minimum had been...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0048031
EISBN: 978-1-62708-224-2
... wire rope was substituted by the more abrasion resistant 6 x 19 rope. Carbon Chemical composition Cranes Martensite Specifications Tensile Strength Fe-0.73C Fatigue fracture The wire rope on a crane in a scrapyard broke after 2 weeks of service under normal loading conditions. Expected...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048253
EISBN: 978-1-62708-234-1
... set at 81 HRA. Carbon Case depth Case hardening Chemical composition Surface hardness AMS 6263 UNS K44414 Rolling-contact wear Two intermediate impeller drive gears were submitted for metallurgical examination when they exhibited evidence of pitting and abnormal wear after production...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c0065825
EISBN: 978-1-62708-228-0
... propagation were needed be controlled. It was concluded that improved steel processing procedures, chiefly hot-working temperature and deformation control, were also required to optimize microstructure and properties. Chemical composition Ductile brittle transition Gas pipelines Steel making API 5L...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... form of tramp elements or dissolved gases; these impurities are also seldom distributed uniformly. Therefore, the composition of the metal or alloy varies from location to location. Unfortunately, such variation in chemical composition can often be significant and produce deleterious material...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006759
EISBN: 978-1-62708-295-2
... that can severely segregate constituents, such as castings or forms of compositionally gradient metallic additive manufactured parts. Often in failure analysis, the fractographic features of a part need to be analyzed at the micron scale in an SEM to determine the failure mechanism. If the...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003529
EISBN: 978-1-62708-180-1
... handling wavelength-dispersive spectrometry CHEMICAL ANALYSIS is often a useful tool for failure analysis. There are two main categories of chemical analysis that are often used by failure analysts: Bulk composition evaluation: often performed in order to determine whether the correct alloy...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006771
EISBN: 978-1-62708-295-2
... surfaces. These techniques provide data about the physical topography, physical properties, chemical composition, and chemical structure of the surfaces under study. Most of these techniques are based on bombarding the surface with species such as photons, x-rays, ions, neutrons, or electrons and analyzing...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003534
EISBN: 978-1-62708-180-1
... analysis time-of-flight secondary ion mass spectrometry X-ray photoelectron spectroscopy MANY ANALYTICAL TECHNIQUES are available for the study and characterization of surfaces. These techniques provide data about the physical topography, physical properties, chemical composition, and chemical...
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
...×. The compositions of the parent metal and the weld metal are listed in Table 2 . Both compositions are within the specifications of JIS SM50B and E-7018, respectively. Table 2 Chemical analysis results Material Composition, % C Mn Si S P As Sn Pb Sb Weld 0.049 0.62 0.56...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006766
EISBN: 978-1-62708-295-2
... techniques such as energy-dispersive x-ray spectroscopy (EDS) and portable x-ray fluorescence (XRF) tools can be used to estimate the material composition in order to allow the chemical analyst to determine the proper techniques and procedures for the quantitative analysis. This is also helpful in...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001073
EISBN: 978-1-62708-214-3
... Abstract Replacement sprockets installed on chain drive shafts for winding fibers exhibited excessive wear. Metallographic and chemical analyses conducted on the original and replacement sprockets showed that the material of the replacement sprocket was 1020 low-carbon steel, whereas the...
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
... Microstructure at the root of one of the reticulated grooves on the interior of the pipe. Chemical analysis showed that the 2-in. and 3-in. pipe satisfied the composition requirements of ASTM A-53 Grade B pipe, while the reduction socket satisfied the requirements of both ASTM A105 and ASTM A-243 Grade WPB...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001034
EISBN: 978-1-62708-214-3
... 1 Results of chemical analyses and hardness testing Composition, % (a) AISI grade Hardness, HRB C Si Mn P S Cr Ni Mo Cu Co Base metal, specimen 1 0.01 0.50 1.69 0.34 0.010 16.80 10.84 2.34 0.28 0.12 316L 75 Weld metal, specimen 1 0.06 0.48 1.65 0.031...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001100
EISBN: 978-1-62708-214-3
... samples from the fractured and unfractured bolts. The results are given in Table 1 and show that the requirements of ASTM A 36 were satisfied. Table 1 Results of chemical analysis Element Composition, % Unfractured As-fractured Sawcut Carbon 0.22 0.21 0.20 Manganese 0.98...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001122
EISBN: 978-1-62708-214-3
... conducted using optical microscope. Chemical composition of the hammerhead was determined by emission spectrometry. The chemical compositions of the chip and hammer head were compared using energy-dispersive analysis. Microhardness versus distance from the striking face was also determined. The hammerhead...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0090971
EISBN: 978-1-62708-222-8
... Abstract A die-cast zinc adapter used in a snowthrower failed catastrophically in a brittle overload manner. The component had a chemical composition similar to standard zinc alloy ZA-27 (UNS Z35840), although the iron content was much higher and the copper slightly lower. The mechanical...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001831
EISBN: 978-1-62708-241-9
... packed with molybdenum disulfide (MoS 2 ) lithium grease. Metallurgical structures and chemical compositions of the bearing’s matrix materials were inspected using a microscope and photoelectric direct reading spectrometer. SEM/EDS was used to examine the local morphology and composition of fracture and...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048607
EISBN: 978-1-62708-225-9
... were not subjected to cyclic loading, fatigue or corrosion fatigue was not possible. To prevent reoccurrence, bolts were required to conform to the specified chemical composition. The hardness range for the bolts was changed from 35 to 45 HRC to 18 to 24 HRC. Petroleum jelly was used as an antiseizure...