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sample mounting

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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.c9001785
EISBN: 978-1-62708-241-9
..., chemistry, SEM, and metallurgical analyses. SEM imaging revealed microvoid coalescence within the fracture zone. The microvoids were flat and smooth edged indicating insufficient bonding. In addition, a cross sectional sample, mounted and etched using alkaline chromate, revealed an oxygen-rich zone...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001391
EISBN: 978-1-62708-215-0
...Abstract Abstract Several surface-mount chip resistor assemblies failed during monthly thermal shock testing and in the field. The resistor exhibited a failure mode characterized by a rise in resistance out of tolerance for the system. Representative samples from each step in the manufacturing...
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
..., inclusions, and so on. With the appropriate calibration, standard, and homogeneous polished metallographic sample mounted in a conductive mount, semiquantitative data can be obtained with limitations on lighter elements. Guidance for using EDS in a quantitative manner is provided in ASTM E1508 ( Ref 5...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001823
EISBN: 978-1-62708-241-9
..., polished, and etched. Light photomicrographs were taken to document the feature morphology and steel microstructure. Hardness testing was performed on the mount to document the hardness. Chemical analysis was performed on a sample removed from the base metal of the pipe section. Mechanical testing...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001041
EISBN: 978-1-62708-214-3
... was tested at a significantly higher number of cycles, cracking was evident along both of the fillet weld toes, as well as through the torque rod mounting holes ( Fig. 4 ). The field-returned failures were cracked at the same locations as sample 9. It was significant that sample 1, tested at a lower number...
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
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001717
EISBN: 978-1-62708-217-4
... bars and forgings shall exhibit an aged martensitic structure, fine grained, with no evidence of titanium-carbo-nitride at the grain boundaries. The mounted samples were repolished, and etched with ferric chloride (5 grams FeCl 3 , 50ml HCl and 50 ml of distilled water) in order to reveal...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001264
EISBN: 978-1-62708-215-0
... at the time of manufacture was ASTM F55-66T, which pertains to stainless steel bars and wires for surgical implants. Three samples were cut from the plate portion of the implant, two in the vicinity of the fracture and one away from the fracture. These samples were mounted in a cold-setting resin and used...
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
...Abstract Abstract Six transformer brackets failed in service, sending a group of three pole-mounted transformers to the ground below. The brackets were made from acrylonitrile-butadiene-styrene (ABS) resin and had been in service for more than 30 years. Remnants of the fractured brackets were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001618
EISBN: 978-1-62708-219-8
... Mo 0.01 <0.01 <0.01 0.15 Cu 0.29 0.12 0.06 0.2–0.35 Al 0.026 0.023 <0.005 … V 0.034 0.073 0.023 0.02–0.10 Ti … … 0.020 0.005–0.03 The samples are shown in Fig. 2 and 3 . Figure 2 shows the mounting bracket (U-shaped base) and the arm, #98, which...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001050
EISBN: 978-1-62708-214-3
... was exactly as predicted by ultrasonic examination. A sample containing the entire crack was later removed and cold mounted in epoxy. The mounted and polished sample is shown in Fig. 9 . It is evident that, although the propagation path is jagged on a local scale, it is generally linear. There is no evidence...
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.a0006757
EISBN: 978-1-62708-295-2
... representative polished and etched samples. Careful selection of cutting, mounting, grinding, polishing, and etching procedures is required and must be optimized for each type of ceramic. Automatic sample preparation is recommended, as are an adjustable pressure, special grinding discs, and the use...
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
... material may be of interest, and sample material may require analysis either on the fracture surface or after it has been removed but preserved. However, there may be legal issues relating to cleaning, and the potential exists for allegations of destruction of evidence if permission from all parties...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001753
EISBN: 978-1-62708-241-9
... throughout the process. The fracture surfaces (samples A–D), along with the polished metallographic mounts, were analyzed in the scanning electron microscope. Macro-hardness measurements were taken on the metallography sample in the Rockwell E scale, prior to it being mounted, polished, and etched...
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
... and initial report ( 3 ), but was believed to be approximately 40 to 130 mm long and located transverse to the hoop stress direction. A small sample of the fracture had been cut from the dome at the intersection of two major cracks as shown in Fig. 1 and this had been duly mounted in resin...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001719
EISBN: 978-1-62708-231-0
... for analysis. These samples were examined in the etched and unetched conditions to study the crack morphology. The samples were metallographically prepared according to ASTM E-3. Samples were mounted in a conductive mount to make use of the SEM for subsequent work. Mounted samples were sequentially sanded from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0047234
EISBN: 978-1-62708-233-4
... of the fractures were through bolt holes in the mounting flange. The holes had a sharp edge and exhibited uneven wear on the inside diameter. In operation, the mounting bolts were frequently found to be loose and in at least one case broken off. A 25x scanning electron microscopy (SEM) fractograph from near...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001795
EISBN: 978-1-62708-241-9
... (~61.2 HRC) Inner ring 724 HV/100 kg load (~61.2 HRC) Balls 687 HV/5 kg load (~59.5 HRC) Samples were appropriately sectioned from the outer ring at locations close to the flaking damage and away from the defect for examining the inclusion content. The samples were mounted and polished...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001266
EISBN: 978-1-62708-215-0
... at the fracture surface and the other from the bottom end. The samples were mounted to show longitudinal cross sections. Drillings from the lower section of the stem were used for chemical analysis. Another prosthesis with identical grain sizes was obtained from the same manufacturer. Two substandard-size...