1-20 of 317 Search Results for

SEM/EDS analysis

Sort by
Image
Published: 01 December 1992
Fig. 4 Standardless, semiquantitative SEM/EDS element analysis of the failed carrier shaft material revealed a carbon steel composition. No contaminants were present on the fracture surface. Element Precision, wt% at.% 2σ K -Ratio Silicon 0.41 0.82 0.12 0.0015 More
Image
Published: 01 December 1992
Fig. 5 Standardless, semiquantitative SEM/EDS element analysis of the weld material revealed a type 300 stainless steel composition. Element Precision, wt.% at.% 2σ K -Ratio Silicon 1.35 2.63 0.17 0.0051 Chromium 17.84 18.72 0.52 0.2143 Iron 74.56 72.84 More
Image
Published: 01 December 1993
Fig. 2 Standardless semi-quantitative SEM/EDS element analysis data and graph of typical corrosion residue present in some of the cracks in the eye of the second-stage impeller. The high sodium content was believed to be the corrosion component for the stress-corrosion cracks. Element More
Image
Published: 01 December 1993
Fig. 3 Standardless semi-quantitative SEM/EDS element analysis data and graph of a crack fracture surface. Base metal elements revealed that the impeller material was an AISI 4300 alloy steel. Element wt% at.% Silicon 0.27 0.53 Chromium 1.10 1.18 Manganese 0.88 More
Image
Published: 01 June 2019
Fig. 9 EDS analysis and corresponding SEM micrographs of different foreign particles observed on the fracture surface of the forging near the defect More
Image
Published: 01 June 2019
Fig. 10 EDS analysis and corresponding SEM micrographs of different inclusions More
Image
Published: 01 December 2019
Fig. 6 ( a ) SEM image of coke in inner surface. ( b ) EDS analysis of ( a ). ( c ) SEM image of coke in outer surface. ( d ) EDS analysis of ( c ) More
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: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001770
EISBN: 978-1-62708-241-9
... were subsequently welded over with 308 stainless steel filler wire and the base plate was replaced with new material. Soon after, the tank began leaking along the weld bead, triggering a full-scale investigation; spectroscopy, optical and scanning electron microscopy, fractography, SEM-EDS analysis...
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
... 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 observed. SEM/EDS analysis of an original weldment...
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
... 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, which was confirmed...
Image
Published: 01 June 2019
Fig. 12 SEMs with EDS analysis showing the severe corrosion at ID of the Stage 3 tube. (a) Note the irregular shape of the corrosion products and loose/porous scale. (b) Note the embedded ash/silica particles. More
Image
Published: 01 June 2019
Fig. 13 SEMs with EDS analysis showing the severe corrosion at ID of the Stage 3 tube. (a) Note the porous nature of the corrosion products Cl (bright) and Si (dark). (b) Note the silica particles (smooth area). More
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
... 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 since the only...
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
... 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 surfaces...
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: 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: 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.c9001771
EISBN: 978-1-62708-241-9
..., coke readily accumulates on the surface of the tubes, fueling carbon diffusion into the metal and a corresponding degradation in microstructure and loss of ductility at high temperatures. radiant tube stress rupture thermal shock heat resistant steel carbide precipitates SEM-EDS analysis...
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
... 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...