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SEM/EDS analysis

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001589
EISBN: 978-1-62708-235-8
... or particles during the plating. The possible sources of fibers were identified. The SEM/EDS analysis of fibers collected from the air duct filters correlated very well with the defect shape and the EDS profile collected from under the defect site. It appears that the fibers from air duct filters directly...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001328
EISBN: 978-1-62708-215-0
... the specifications of these filler metals. SEM/EDS analysis showed base metal grain boundary precipitates to he primarily chromium carbides, but some titanium carbides were also observed. Most apparent stringer compounds were titanium carbides (and titanium cyanonitrides), but chromium carbides were also...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001770
EISBN: 978-1-62708-241-9
... at slip bands and twin boundaries, as shown in Fig. 6(c) and (d) , respectively. Large number of slip bands is indicative of occurrence of plastic deformation. The SEMEDS analysis results also confirmed that the precipitates were Cr-carbides ( Fig. 6e ). Fig. 6 SE micrographs showing...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001843
EISBN: 978-1-62708-241-9
... pest, a type of degradation that occurs at low temperatures. Based on the results of the investigation, which included SEM/EDS analysis, inductively coupled plasma spectroscopy, and x-ray diffraction, the metal surfaces contained less than 0.1% Bi and thus were not adequately protected against tin pest...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001784
EISBN: 978-1-62708-241-9
... stress raisers unsintered particles low carbon steel longitudinal crack SEM/EDS analysis chemical composition low carbon steel (low carbon steel, general) Introduction Properly heat treated alloy steels can make durable wrench sockets. Materials selection of such a part is well established...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001066
EISBN: 978-1-62708-214-3
.../Identification Material Qualitative chemical analysis of the spool piece material was performed using SEM and energy-dispersive X-ray spectroscopy (EDS). Results indicated that the alloy composition was consistent with low-carbon steel. Coatings or Surface Layers SEM/EDS analysis of the fracture...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001344
EISBN: 978-1-62708-215-0
... carryover of caustic (NaOH) into the steam system. SEM-EDS analysis of a fracture surface Table 2 SEM-EDS analysis of a fracture surface Element Composition, % Iron 67.5 Chromium 17.0 Sodium 6.0 Nickel 6.0 Silicon 2.0 Calcium 1.0 Aluminum <0.5 Sulfur <0.5...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001367
EISBN: 978-1-62708-215-0
... the inside, cooled in liquid nitrogen, and fractured open to enable analysis of a fracture surface. Standardless semi-quantitative scanning electron microscopy/energy-dispersive x-ray spectrometry (SEM/EDS) analysis revealed a high sodium content in the corrosion product ( Fig. 2 ). The base metal elements...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001836
EISBN: 978-1-62708-241-9
... in the crack vicinity. After etching the sample, the presence of copper is observed at the grain boundary. This shows the possibility of copper diffusion during pipe bending at high temperature ( Fig. 2 ). Fig. 2 Microphotographs of cracks in unetched and etched conditions SEMEDS Analysis...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001771
EISBN: 978-1-62708-241-9
... ( a ) Optical microstructure shows continuous grain boundary and blocky carbide precipitated in matrix. ( b ) SEM image of microstructure. ( c , d ) The EDS analysis of chemical composition of carbide and matrix marked 1 and 2 on ( b ), respectively The microstructure of the cross section of ruptured...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001318
EISBN: 978-1-62708-215-0
... prematurely below design pressure in a brittle manner. Fractographic examination using SEM indicated that failure occurred intergranularly from the cylinder side. EDS analysis indicated the presence of mercury on the fracture surface and mercury was also detected using scanning auger microprobe (SAM) analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0090994
EISBN: 978-1-62708-225-9
... wire tensile strength range was 1689 to 1793 MPa (245 to 260 ksi). The finished springs were to be shot peened for greater fatigue resistance. Investigation (visual inspection, 3x images, 2% nital etched 148x SEM images, chemical analysis, hardness testing, and EDS analysis) supported the conclusion...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001805
EISBN: 978-1-62708-241-9
... corrosion pits delamination brittle cleavage SEM/EDS analysis tensile yield strength 420 (martensitic stainless steel) UNS S42000 AMS 2404E (electroless nickel plating) Background Surgical tools are defined as any device or instrument used during a surgical procedure. These tools range from...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001371
EISBN: 978-1-62708-215-0
... of pitting. Samples for SEM fractography, EDS analysis, and metallography were taken at the crack initiation site. Hardness testing produced a value of approximately 27 HRC. The examinations clearly established that the shaft failed by fatigue. The fatigue crack originated at a localized region...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001633
EISBN: 978-1-62708-221-1
...Abstract Abstract Failure analysis of a mobile harbor crane wheel hub that included SEM and EDS analyses demonstrated that the mechanism of failure was fatigue. The wheel hub was a ductile cast iron component that had been subjected to cyclic loading during a ten-year service period...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001772
EISBN: 978-1-62708-241-9
... surfaces and showed a pattern very similar to dezincification. Further investigation to determine the cause of damage using light microscopy and SEM-EDS techniques revealed that the microstructure consisted of multiple phases and that a Si-rich phase was being preferentially attacked, leading to increased...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001825
EISBN: 978-1-62708-241-9
...Abstract Abstract A type 304 stainless steel tube that failed in a boiler stack economizer was analyzed to determine the cause. The investigation consisted of visual, SEM/EDS, and metallographic analysis. Several degradation mechanisms appeared to be at work, including pitting corrosion...
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
... SEM/EDS analysis, these particles were found to be sulfide particles. The corrosion cavity showed the presence of corrosion products containing sulfur and oxygen. The internal penetration zone contained more sulfur than the scale, which is consistent with the mechanism of hot corrosion type I (HTHC...
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
..., respectively. Chemical analysis was carried out using a scanning electron microscope (SEM) fitted with EDS and combustion type carbon/sulfur analyzer. Hardness was measured on Vicker’s Hardness tester. Service-simulated laboratory experiments were performed on servohydraulic uniaxial fatigue testing machine...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006770
EISBN: 978-1-62708-295-2
... systems, SDDs have made the silicon-lithium detectors obsolete for EDS analysis on SEM systems. Fig. 3 Schematic of a silicon-drift detector (SDD) system. EDS, energy-dispersive spectrometer Wavelength-Dispersive Spectrometers Spectrometers that characterize x-rays based...