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SEM/EDS fracture surface analysis

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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
.... Scanning Electron Microscopy/Fractography The fracture initiation sites in samples A and B were examined in the SEM and subjected to EDS analysis in the as-received condition. Figures 3 show that the fracture surface in the initiation area had an intergranular morphology and was covered...
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
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001633
EISBN: 978-1-62708-221-1
... of the fractured wheel hub components are shown. Another smoother, flatter, and less shiny region of the fracture surface is shown in Fig. 7 . Regions on this portion of the fracture appear as brown stains (arrow). The brown area was chemically analyzed by EDS on the SEM and found to be primarily iron...
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
... stainless steel longitudinal and transverse cracks SEM/EDS fracture surface analysis tensile stress 304 (austenitic wrought stainless steel) UNS S30400 Introduction Test Procedures Results Discussion and Conclusions References References 1. Lund R. , Fatigue Fracture...
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 Results and Discussions Conclusions References References 1. Shigley J.E. , Mischke C.R. , Budynas...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001098
EISBN: 978-1-62708-214-3
... locations were identified—three at the head-to-shank fillet, four at the eighth thread root from the cap, and one at the sixth thread root from the cap. Fracture surfaces were examined using a stereomicroscope and SEM, and the fracture mode was shown to be transgranular. EDS on the fracture surfaces showed...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001088
EISBN: 978-1-62708-214-3
... Analysis The undamaged fracture surface from specimen A was removed for analysis to determine material composition. Standardless, semiquantitative SEM/EDS element analyses of the fracture surface revealed a carbon steel shaft and a type 300 stainless steel weld nugget ( Fig. 4 and 5 ). Fig. 4...
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
... SEM image of a fracture surface (right side of image), is shown in Fig. 1 . SEM analysis revealed intergranular fracture morphology, as evidenced by grain boundary facets. Energy dispersive spectroscopy (EDS) of the fracture surface indicated the presence of chlorides. Examination of the exterior...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001841
EISBN: 978-1-62708-241-9
... and propagation. A nitinol stent subjected to an unintentionally long ultrasonic cleaning treatment fractured during bend testing. SEM analysis showed that striations were present on the fracture surface, indicating that a fatigue crack preceded the overload fracture as shown in Fig. 6 and 7 . Several...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001614
EISBN: 978-1-62708-225-9
.... Fig. 1 Part of the failed screw with fracture surface. SEM, 10× These so-called microfractographic fracture surface elements are specific to the method, or rather mechanism, of fracture. 4 Using these elements, it is possible to deduce the initial loading conditions of the mechanical part...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001102
EISBN: 978-1-62708-214-3
... 7 is an EDS graph related to this analysis. Figure 6 also shows that the substrate was primarily intergranular, consistent with liquid metal embrittlement (LME). Fig. 6 SEM micrograph of a fracture surface, depicting a melted and resolidified cadmium layer over an intergranular topography...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003533
EISBN: 978-1-62708-180-1
.... , and Lifshin E. , Scanning Electron Microscopy and X-ray Microanalysis , Plenum Press , New York , 1991 Development of SEM Technology Operation Specimen Preparation Application of SEM in Fractography Typical Fracture Surfaces Dependence of Image on Microscope Type and Operating...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003542
EISBN: 978-1-62708-180-1
... moved through this grain (transgranular fracture). Fracture around grains (intergranular fracture) is seen at the top of the image. SEM; picture width ∼50 μm Fig. 14 Fracture surface of a piece of polycrystalline alumina. The large grain in the center broke by transgranular fracture (note...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003536
EISBN: 978-1-62708-180-1
...: Ref 63 Fig. 24 Determination of parallax Δ x from stereo imaging. Source: Ref 75 Fig. 26 The two matching SEM fractographs of the same field in the two conjugate fracture surfaces and the two vertical serial sections through the same location above and beneath the fracture...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001801
EISBN: 978-1-62708-241-9
... using SEM/EDS and the results were listed in Table 1 . The data showed that rod “B” had low aluminum and that iron was present, which might be a surface contaminant. Rod “A” chemical analysis met the chemistry specification for ASTM F136. Chemical analysis [<xref rid="c9001801-ref2" ref-type="bibr">2...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003539
EISBN: 978-1-62708-180-1
... SEM view of fatigue fracture surface of annealed medium-carbon alloy steel tested in rotating bending. No distinct fatigue striations could be resolved. Crack growth direction from right to left Fig. 39 Crystallographic fatigue in fracture mechanics specimen of cast Co-Cr-Mo-C medical...
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
... Metal Embrittlement The failure of this locomotive axle was due to LME. The evidence of copper as a third phase at the crack tip and the SEM images detailing intergranular fracture with copper wetting the surface support this conclusion. Historical evidence that has examined failures of this type...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001804
EISBN: 978-1-62708-241-9
... cracks on the thread of the screw: without metallo-graphic etching Fractographic analysis with a SEM operating at 20 kV showed the fracture surface of the screws with different magnifications. Figure 4 (image with lower magnification) reveals the presence of a surface discontinuity, which...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001757
EISBN: 978-1-62708-241-9
... the fractured blade. Optical microscopy was used to determine the microstructures of a blade, and energy-dispersive X-ray fluorescence, inductively coupled plasma spectrometry (ICP), and energy-dispersive spectroscopy (EDS) in a field emission scanning electron microscope (FE-SEM) were used to verify...