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metallographic examination

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001704
EISBN: 978-1-62708-218-1
... Abstract Several type 304 stainless steel fire truck water tanks developed through-wall leaks after being in service for approximately two years. One representative tank underwent a comprehensive laboratory analysis, which included metallographic examinations and chemical analyses...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001667
EISBN: 978-1-62708-235-8
... Abstract Nondestructive metallographic examination of materials frequently must be performed on-site when the component in question cannot be moved or destructively examined. Often, it is imperative that specific microstructural information (i.e., material type, heat treatment condition...
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Published: 01 June 2019
Fig. 2 Cutting sequence used for metallographic examination of shaft failure. More
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Published: 01 December 2019
Fig. 8 Metallographic examination of the IR longitudinal cross-section. Note the heat distress evidenced by the untempered martensite band observed in the etched condition. Etchant: Nital 2% More
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Published: 01 December 2019
Fig. 3 Metallographic examination of the scissors indicated crack branching More
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Published: 01 December 2019
Fig. 4 Details of the metallographic examination of the specimen cut from the curved tube shown in Fig. 3 More
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Published: 01 December 2019
Fig. 5 Metallographic examination of the carbon steel of the base metal and heat-affected zone on both sides of the longitudinally welded plate of the inferior ring of the reactor More
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Published: 01 January 2002
Fig. 14 Sectioning of turbine blades for metallographic examination. (a) Typical locations for cross sectioning of turbine blades. (b) View of Sectioned blade More
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Published: 30 August 2021
Fig. 30 Metallographic examination of the carbon steel of the base metal and heat-affected zone on both sides of the longitudinally welded plate of the inferior ring of the reactor More
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Published: 01 December 1993
Fig. 7 Results of in situ metallographic examination. (a) Grain size variations in the lower tubular portion. (b) Grain size variations in the HAZ of the upper brazed joint More
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Published: 30 August 2021
Fig. 57 Metallographic examination of sample shown in Fig. 57 . HAZ, heat-affected zone More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047118
EISBN: 978-1-62708-235-8
... Abstract An automobile manufacturer rejected several 1035 steel stub axles because of what appeared to be short longitudinal cracks in the surfaces of the pins. The cracks were found when six axles were examined for defects by magnetic-particle inspection. However, metallographic examination...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0060097
EISBN: 978-1-62708-219-8
... by metallographic examination. The fracture features were found to be characteristic of an overload failure in a ductile material. The ruptured tubes were concluded as a result of examination to have failed as a result of excessive internal pressure. The source of the excessive internal pressure was assumed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047865
EISBN: 978-1-62708-225-9
... and stereo-microscopic examination. One tooth on each shaft was found to be broken off. It was revealed by metallographic examination of an unetched section through the fractured tooth that the fracture surface was concave and had an appearance characteristic of a seam. Partial decarburization of the surface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048099
EISBN: 978-1-62708-235-8
... of the fracture surface. Surface burning to a depth of approximately 0.8 mm was disclosed by metallographic examination of a section taken through the region that contained the beach marks. A forging defect was indicated by the degree of decarburization and oxide dispersion that were visible. The failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0048257
EISBN: 978-1-62708-217-4
... and it was suggested that it had resulted from surface defects. A decarburized surface layer and subsurface oxidation in the vicinity of pitting were revealed by metallographic examination of the 2% nital etched gear tooth sample. It was concluded that pitting had resulted as a combination of both the defects...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001737
EISBN: 978-1-62708-229-7
..., with damage ahead of the crack tip occurring by means of very local processes of creep. Metallographic examination disclosed heavy surface layers of carbides, such that the material was extremely brittle when subjected to bending. Accordingly, although it was demonstrated that the casing could be welded...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0048068
EISBN: 978-1-62708-224-2
... cracking started was revealed by visual examination of the fracture region. Almost 50% of the fracture surface was found to contain beach marks (indicative of fatigue failure) while the remainder contained cleavage facets. A medium-coarse acicular as-forged structure was revealed by metallographic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001201
EISBN: 978-1-62708-232-7
... spot. This led to the conclusion that a shrinkage cavity was present. Metallographic examination confirmed that the fracture of the swivel head was caused or favored by a cavity. Castings Shrinkage Spindles Steel casting Casting-related failures The swivel head of a driving spindle...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0047347
EISBN: 978-1-62708-234-1
... Abstract A high-chromium white cast iron shell liner installed in an ore crusher sustained impact damage in the course of operation. Visual-optical examination revealed horizontal cracks on the surface of the liner along with particles that had fractured off. Metallographic examination...