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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c0045911
EISBN: 978-1-62708-230-3
... intergranular fracture was almost completely obscured, the EDX spectrum included carbon, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, and calcium in quantities exceeding the levels expected for the alloy ( Fig. 4 ). Fig. 3 SEM fractograph of the failed Inconel 600 bellows. Fig. 4...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001126
EISBN: 978-1-62708-214-3
... oxide and covered on the back surfaces with an adherent black polyethylene plastic. Macro fractography, SEM fractography, EDX analysis, and photo elasticimetry were conducted on four of the shattered panels. Small nickel sulfide inclusions were found at the failure origins. Failure of the panels was...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0045918
EISBN: 978-1-62708-235-8
.... EDX analysis showed they consisted of niobium and fluorine. Plastic replicas, prepared by standard TEM techniques, were analyzed with selected-area electron diffraction, showing a pattern match for niobium tetrafluoride. Auger analyses showed electron spectra containing peaks representing carbon...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001848
EISBN: 978-1-62708-241-9
... and macroscopic inspection, metallographic and chemical analysis, SEM imaging, optical profilometry, mechanical property testing, and EDX analysis. The die was made of chromium hot-work tool steel and the forgings were made of CuZn39Pb3 heated to an initial working temperature 700 deg C. The entire...
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
... attack of the gold. To investigate the problem, a matrix of test units was produced and analyzed. Scanning electron microscopy, EDX analysis, and x-ray diffraction techniques were used to determine the extent of the corrosion and identify the corrosion products. The results indicated that the...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001798
EISBN: 978-1-62708-241-9
... Abstract The crosslinked epoxy resin encapsulant protecting an electromagnetic valve coil failed during long-term storage and was examined to determine the cause. The investigation included fault-tree analysis, FTIR and EDX spectroscopy, and differential scanning calorimetry with...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001573
EISBN: 978-1-62708-226-6
... where the wire is fixtured in the coating chamber during coating. Examination and analysis of the pits (shown in Figure 1 ) using SEM/EDX detection unit revealed significant peaks of B, O, Zr and Fe. Moreover, the shape of the pits was similar to an arc crater. Fig. 1 Photograph showing arc-like...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001387
EISBN: 978-1-62708-215-0
... side: 50 °C (120 °F) Cooling water side: 45 °C (110 °F) Scanning electron microscopy (SEM) and energy-dispersive x-ray (EDX) studies were carried out on the outer and inner surfaces of the gouged anode. EDX analysis of the unattacked nickel matrix showed the presence of nickel only ( Fig. 4...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001490
EISBN: 978-1-62708-232-7
... 7 . Based on the appearance and on energy-dispersive x-ray (EDX) microprobe spectra, Figures 8 and 7 , and on the wavelength spectrometer analysis of oxygen, Figure 9 , the following areas (starting from the inside surface) were identified: An aluminum-iron oxide scale or dross (area 1 in...
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
... also observed. SEM examination and EDX/WDX analyses showed the corrosion products to be oxides and chlorides of copper. Cross-section of the leads were metallographically prepared and revealed cracks in the plating with necked-down ends and excessive corrosion of copper under the cracked areas, as...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001267
EISBN: 978-1-62708-215-0
.... 4 ). EDX analysis of the small inclusion found in one of the samples showed that it contained a small amount of oxygen, carbon, and chlorine—elements not present in the base metal, except for a very small amount of carbon and oxygen ( Fig. 5 and 6 ). Fig. 2 SEM micrographs showing a rub mark...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001792
EISBN: 978-1-62708-241-9
... shafts fracture rotary-bending fatigue steel ratchet marks beach marks star-shaped fracture pattern SEM/EDX analysis fatigue strength SAE 4340 (nickel-chromium-molybdenum alloy steel) UNS G43400 SAE 5046H (low-alloy chromium steel) UNS H50460 References 1. Jing...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001044
EISBN: 978-1-62708-214-3
... X-ray (EDX) analysis. The spectrum revealed contamination by iron, sulfur, and silicon. The iron and sulfur detected in the cracks were believed to have come from the carbon steel tube support plates or from chemical cleaning residue that was washed into the cracks. The crack region was also studied...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001833
EISBN: 978-1-62708-241-9
... apparent on the fractured grain faces. Energy-dispersive analysis (EDX) of X-ray shows that the grain boundary particles contain significant amounts of chromium and carbon ( Fig. 4a ) compared with the chromium and carbon contents on a typical area of grain boundaries ( Fig. 4b ). The SEM observation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001696
EISBN: 978-1-62708-234-1
... magnification view of previous figure. Magnification: 75× Energy Dispersive X-Ray Spectrometry (EDX/S) revealed the presence of chlorine and aluminum on the fracture surfaces of the burst. Similar examination disclosed the presence of corrosion products and debris, consisting of titanium-bearing paint...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001599
EISBN: 978-1-62708-236-5
... were scraped from the outer surface and analyzed using X-ray diffraction (XRD). Results indicated that the deposits consisted of calcium aluminum silicate, lithium aluminum silicate, and trevorite. Evaluation of the molybdenum electrode using energy dispersive X-ray (EDX) spectroscopy revealed that...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001845
EISBN: 978-1-62708-241-9
... present continuous morphology The aim of the present investigation is to identify the root cause of failure and propose corrective measures. Visual inspection, scanning electron microscopy (SEM) equipped with an energy-dispersive X-ray (EDX) spectrometer for fractographic and microstructural...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001799
EISBN: 978-1-62708-241-9
... the inner race ‘A’ of the bearing showing ( a ) longitudinal and ( b ) transverse cracks Chemical analysis of pinion shaft was carried out using SEM-EDX and C/S analyzer. The results are given in Table 1 . The material adhered to the inner race of bearing was also analyzed to determine the...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001636
EISBN: 978-1-62708-217-4
... properties }M323 rotor hub failed yellow arm Fractography: service failure, full-scale and specimen fatigue test failures Fatigue origins, fracture characteristics (micromechanisms), mesoscopic topography changes Shot peening influence (compressive stresses in surface layers) EDX chemical...