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mounting specimen

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... aluminum etched with aqueous 0.5% hydrofluoric acid Fig. 11 Light micrographs of specimens of 1215 carbon steel that were salt bath nitrided and mounted in different resins. (a) Epomet thermosetting epoxy resin. (b) Phenolic thermosetting resin. (c) Methyl methacrylate thermoplastic resin. (d...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... examination can be performed with the scanning electron microscope (SEM) over the same magnification range as the LM, but examination with the latter is more efficient. This article describes the major operations in the preparation of metallographic specimens, namely sectioning, mounting, grinding, polishing...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001065
EISBN: 978-1-62708-214-3
... the accident. Circumstances Leading to Failure Pertinent Specifications Five specimens from the failure were evaluated. The first specimen contained material from the pipe, elbow, and weld. Chemical analysis samples and an optical mount were cut from this specimen, and the balance of the material...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0048039
EISBN: 978-1-62708-219-8
..., and several mounted specimens of various wires from the rope were examined. Samples of wire received were 1.2-mm (0.0465-in.) diam heart wire, 1-mm (0.0405-in.) diam outer wire, and 0.6-mm (0.023-in.) diam inner wire. Investigation Conclusions Selected References Selected References • Fatigue...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0091669
EISBN: 978-1-62708-227-3
... of chloride. Metallographic examination of mounted specimens in the polished and polished-and-etched conditions revealed that the cracks, primary and secondary intergranular cracks showing intergranular corrosion, were similar to stress-corrosion cracks observed previously in aluminum alloys of this type...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
... The specimens studied were sectioned and cold-mounted in epoxy resin. The mounted specimens were then ground and polished to a mirror-finish using 500, 1200, and 4000 grit SiC paper, followed by 3, 1 and 1 4 μm diamond paste. All grinding and polishing was carried out on a semi-automatic machine...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001598
EISBN: 978-1-62708-232-7
...°) and to the melter were maintained. A sample of a new drain tube was also sectioned and mounted with the other three samples. Fig. 3 SEM photograph showing holes in the OD of the CIM drain tube Dimensional measurements were performed on the mounted specimens using a measuring microscope. The thinnest...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001085
EISBN: 978-1-62708-214-3
... specimens were then removed from the impeller. Fig. 2 Pump impeller after liquid penetrant examination. Fig. 3 Closeup view of penetrant-enhanced crack. Scanning Electron Microscopy/Fractography Two fractures were examined under the scanning electron microscope (SEM). The first...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001717
EISBN: 978-1-62708-217-4
...-beam stress corrosion test specimens from actual strut mounts. The specimens were cadmium brush plated using a “low embrittling” solution at each of the facilities, and loaded into three-point bend fixtures in accordance with ASTM G39. A total of half of the specimens were loaded to 80% of the material...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048120
EISBN: 978-1-62708-225-9
... Conclusions Selected Reference Selected Reference • Fatigue Failures , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 2002 , p 700 – 727 10.31399/asm.hb.v11.a0003544 Longitudinal specimens from the three broken springs were mounted and processed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
... microanalysis, Auger electron spectroscopy, secondary ion mass spectroscopy, and X-ray powder diffraction. The article discusses the analysis and interpretation of base material composition and microstructures. Preparation and examination of metallographic specimens in failure analysis are also discussed...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... should be optimized, depending on the material properties. For automatic sample preparation, the specimens can be mounted or may be glued directly onto a sample holder. The two possibilities for metallographic mounting are hot mounting, with compression and heat, and cold mounting. It should be noted...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001038
EISBN: 978-1-62708-214-3
... replicas. The examinations indicated that fatigue cracks had originated at the rim backside and propagated to the rim midsection. Catastrophic failure occurred at a final overland. Fatigue fracture of the wheel rim was attributed to cyclic loading created by improper wheel mounting of a spare tire...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001160
EISBN: 978-1-62708-220-4
... are prone to smearing and work hardening during machining, it was recommended that these types of steels be machined only with sharp, short tools mounted in rigid structures. In addition, residual stresses should be eliminated by post-process annealing in a protective atmosphere. Chlorides Worm gears...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001287
EISBN: 978-1-62708-215-0
..., chemical, and mechanical (hardness and tensile properties) analyses of failed shaft specimens were conducted. The examinations showed that the shafts had failed by fatigue. It was recommended that a low-alloy steel (e.g., 3% Ni-Cr) in the hardened and tempered condition and subjected to shot-peening...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001561
EISBN: 978-1-62708-229-7
... in order to view the fracture face by SEM, and the opposite side of the specimen mounted in hard epoxy for viewing by optical microscopy. Prior to the optical microscopic examination, all of the specimens were etched by ASTM A262-Practice A (oxalic acid test) for determination of degree of weld...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0089696
EISBN: 978-1-62708-220-4
... maintenance. Pertinent Specifications Specimen Selection Figures 1 and 2 show a failed area in a weld-repaired region. The cracks initiated in the weld-repair locations on the two webs. Figures 3 and 4 show closeup views of the fracture surfaces. Figure 3 clearly shows the dark region...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001089
EISBN: 978-1-62708-214-3
... of the crosshead was sawed off to obtain specimens for examination. A full cross section was polished and etched. A small piece from the weld-repair area was cold mounted and prepared for optical microscopic examination. Scanning Electron Microscopy/Fractography The microstructure in the casting...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046512
EISBN: 978-1-62708-234-1
...Abstract Abstract Immediately after installation, leakage was observed at the mounting surface of several rebuilt hydraulic actuators that had been in storage for up to three years. At each joint, there was an aluminum alloy spacer and a vellum gasket. The mounting flanges of the steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001137
EISBN: 978-1-62708-228-0
... mm × 20 mm) microscope specimen piece of fracture surface, previously mounted and polished for metallographic examination! all other material had been scrapped. Nevertheless it was possible to perform an experimental failure analysis. This paper describes that analysis and illustrates...