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metallographic examination

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Published: 01 September 2008
Fig. 14 Metallographic examination of cracks evident in the flange of the main landing gear lever attach pin, showing loss of chromium at cracks (20 μm) More
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Published: 01 September 2008
Fig. 27 Metallographic examination of primary crack. Fracture path followed prior-austenite grain boundaries. No precipitates in grain boundaries (50 μm) were observed. More
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Published: 01 July 1997
Fig. 4 Typical sections used in the metallographic examination of welded joints More
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Published: 01 August 2018
Fig. 12.52 (a) Metallographic assembly for the examination of a nail. (b) Longitudinal cross section of the nail, showing the edge of the nail head where the “fibers” have been deformed by the forming operation. (c) Transverse cross section of the body of the nail: the fiber orientation gives More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130043
EISBN: 978-1-62708-284-6
... of specimens, mechanical testing, macroexamination, microexamination, metallographic examination, determination of the fracture mechanism, chemical analysis, exemplar testing, and analysis and writing the report. The chapter ends with a discussion on various processes involved in the determination...
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Published: 01 September 2008
Fig. 7 Typical metallographic specimen. This specimen was used to examine microstructures in a failed weldment. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270130
EISBN: 978-1-62708-301-0
.... The bolts were removed and analyzed to determine the mode and cause of failure. Based on the results of macroscopy, scanning electron fractography, metallographic examination, and chemical analysis, the failures were caused by stress corrosion cracking, and in one case, overtightening. microstructural...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850541
EISBN: 978-1-62708-260-0
... Abstract This appendix contains recipes of the electrolytic solutions in which various metals are polished in preparation for metallographic examination. electrolyte electromechanical polishing Metallography Principles and Practice George F. Vander Voort, p 541-542 DOI: 10.31399...
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Published: 01 October 2011
Fig. 7.2 Jose Ramon Vilella (1897–1971), distinguished metallographer who understood the need to faithfully prepare representative surfaces in metallographic examinations. Source: Ref 7.1 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270084
EISBN: 978-1-62708-301-0
... that the rim had exerted a very heavy force on this tie-rod before the nut had been sheared off. Fig. CH10.3 Fracture surface of the hub Testing Procedure and Results Metallography and Scanning Electron Fractography To check the quality of the hub material, metallographic examination...
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Published: 01 August 2018
Fig. 12.10 Cold working polycrystalline materials will generate anisotropy of the grain shape: their elongation in the deformation direction is evident. Anisotropy increases with cold work. For small deformations (< approx. 10%), this anisotropy may not be observable in the metallographic More
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Published: 01 November 2007
Fig. 5.60 Oxide scale and no evidence of metal dusting on the surface of a Multimet alloy fan box exposed to flowing carburizing gas (same fan box as that shown in Fig. 5.59 ). The sample was plated with nickel before mounting for metallographic examination. More
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Published: 01 November 2007
Fig. 7.41 Sulfidation resistance of alloy HR160 compared to those of alloys 556, 800H, and 600 after 215 h at 870 °C (1600 °F) in Ar-5H 2 -5CO-1CO 2 -0.15H 2 S ( p O 2 = 3×10 –19 atm, p S 2 = 0.9 × 10 –6 atm). Samples were cathodically descaled before being mounted for metallographic More
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Published: 01 August 2018
Fig. 10.95 Steel nitrocarburized at 550 °C (1020 °F) for 5 h. The surface was coated with a chemically deposited layer of hard nickel to preserve it for metallographic examination (indicated as Ni in the figure). The “white layer” is where the formation of high hardness nitrides occur More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270150
EISBN: 978-1-62708-301-0
.... Fig. CH36.5 SEM fractograph of region close to the origin showing inclusions that were analyzed to be rich in silicon Metallography A section from the root was cut and prepared for metallographic examination. It was found to contain a few large silicon-rich inclusions. Discussion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270087
EISBN: 978-1-62708-301-0
..., chromium, titanium, aluminum, iron, and molybdenum ( Fig. CH11.6 ). Metallographic examination of the adjacent blade and a good blade indicated that the microstructures in all of them were similar. Fig. CH11.5 Microstructure of the failed blade Fig. CH11.6 Energy-dispersive spectrum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220667
EISBN: 978-1-62708-259-4
... originating from various sources, as discussed at length in the previous chapters in this book. Metallographic examination must thus carefully consider the position and orientation of the portion of the material to be sampled. Depending on the technique used, the region that will be observed and analyzed may...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410197
EISBN: 978-1-62708-265-5
... curves. The IT diagrams have been produced by metallographic examination of series of specimens held for various times at various temperatures between Ae 3 or A cm and M s . More than a hundred specimens are often required to determine a complete IT diagram for a given steel ( Ref 10.2...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270133
EISBN: 978-1-62708-301-0
... due to stress-corrosion cracking combined with the effects of inadequate tempering. compressor blades fractography metallographic examination stress corrosion cracking visual examination Summary A blade of the second-stage compressor in an engine fractured in service. The fracture...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
... micrographs of a typical crack. This crack extended through the chromium plating and into the base metal to a depth of approximately 0.25 mm (0.010 in.). There was no visual indication of untempered or over-tempered martensite. Fig. 14 Metallographic examination of cracks evident in the flange...