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microscopic examination

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780193
EISBN: 978-1-62708-268-6
..., scanning electron microscopy, along with EDAX, spectrometry, chromatography (depending on material type) Interference Dimensional inspection, tolerance analysis, visual examination, microscopic examination Wear Dimensional inspection, tolerance analysis, visual examination, microscopic examination...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720161
EISBN: 978-1-62708-305-8
..., polishing, and etching. The discussion covers their basic principles, advantages, types, and applications, as well as the equipment setup. The chapter includes tables that list etchants used for microscopic examination. It also provides information on microscopic examination, microphotography...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910475
EISBN: 978-1-62708-250-1
... Abstract This chapter discusses the techniques applicable to the diagnosis of corrosion failures, including visual and microscopic examination of corroded surfaces and microstructure; chemical analysis of the metal, corrosion products, and bulk environment; nondestructive evaluation methods...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900167
EISBN: 978-1-62708-350-8
... of Fe 4 N, plus a diffusion zone of nitride containing tempered martensite. Nital. 750× Abstract Examining and evaluating the nitrided case is generally accomplished by hardness testing and microscopic examination. This chapter discusses both characterization methods, as well as sample...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090419
EISBN: 978-1-62708-266-2
... to characterize cracking and fracture damage, and explains what to look for during macroscopic and microscopic examinations as well as chemical and metallographic analyses. It also includes nearly a dozen case studies investigating SCC failures in various materials. failure analysis macroscopic examination...
Image
Published: 01 June 2010
Fig. 19 Carl Zapffe, who authored Stainless Steels ( 1949 ) and coined the term fractography from his original work on the microscopic examination of fracture surfaces. 1968 photo. Courtesy of the Zapffe family More
Image
Published: 01 September 2005
Fig. 53 Experimental gears after nital etch for surface damage. Grinding patterns were observed after surface nital etch on both gears. Microscopic examination of sections removed from the gears did not reveal microstructural changes in the case hardened matrix in either gear. More
Image
Published: 01 December 2000
Fig. 5.52 Experimental gears after nital etch for surface damage. Grinding patterns were observed after surface nital etch on both gears. Microscopic examination of sections removed from the gears did not reveal microstructural changes in the case hardened matrix in either gear. More
Image
Published: 01 August 2018
, for sufficient time for the material to harden. (c) Replica is carefully removed and taken for microscopic examination. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270025
EISBN: 978-1-62708-301-0
... and electron microscopy. It presents a number of images recorded using these methods and explains what they reveal about the mode of fracture and the state of the component prior to failure. fractography microscopic examination macroscopy IN FAILURE ANALYSIS, examination is done at various levels...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270118
EISBN: 978-1-62708-301-0
... were seen on the fracture surface ( Fig. CH22.2 ). At the origin and the surrounding area, deep corrosion pits were seen. Fig. CH22.2 Striations typical of fatigue seen on the fracture surface Discussion Microscopic examination confirms that the blade failed due to fatigue, the crack...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220069
EISBN: 978-1-62708-259-4
... the steps involved in replicating part surfaces. etchants etching metallographic replication microscopic examination sample preparation Several techniques are used to observe the structure of steels and cast irons in the microscopic scale. For many of these techniques, sampling and sample...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270080
EISBN: 978-1-62708-301-0
... Scanning electron microscopic examination of the fracture surface shown in Fig. CH8.2 revealed characteristics of brittle fracture ( Fig. CH8.3 ). In order to study the effect of circumferential welding, a section was cut near the fracture surface to include a weld. Optical metallography of this section...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180151
EISBN: 978-1-62708-256-3
... and analysis fracture surfaces, secondary cracks, and other surface phenomena) Microscopic examination and analysis of fracture surfaces Selection, preparation, examination, and analysis of metallographic sections Determination of the actual stress state of the failed component Determination...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270154
EISBN: 978-1-62708-301-0
... blade of a helicopter had developed cracks on the aluminum alloy skin. Visual and electron microscopic examination revealed that a fatigue crack had originated at the trailing edge of the blade on the sandwiched aluminum alloy center sheet on the underside of a rivet hole. Propagation of this crack...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630101
EISBN: 978-1-62708-270-9
...-alloy metals. This is illustrated later in this chapter. Microstructural Aspects of Ductile Fracture It is on a microscopic scale that the characteristics of ductile deformation and fracture really become unique. It is necessary to examine both the changes that are visible with a light microscope...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610549
EISBN: 978-1-62708-303-4
.... failure analysis fractography macroscopic examination microscopic examination IN THE STUDY OF ANY FAILURE, the analyst must consider a broad spectrum of possibilities or reasons for the occurrence. Often a large number of factors, frequently interrelated, must be understood to determine the cause...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850267
EISBN: 978-1-62708-260-0
.... In any study of materials, the wisest procedure is to start on the macroscopic level before proceeding to microscopic and submicroscopic detail. Simple visual examination, perhaps aided by special print techniques and macroetching, should be the prelude to low-power, medium-power, and finally, high-power...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270135
EISBN: 978-1-62708-301-0
... operation. The two adjacent blades had one crack each. Microscopic examination revealed that the failure and the cracking were due to fretting action of the shroud pins inside the shroud holes. Background A second-stage turbine blade failed in service, the fracture running through the shroud hole...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630063
EISBN: 978-1-62708-270-9
... by electron microscope examination, as shown in Chapter 9, “Ductile Fracture,” in this book. Note that the shear deformation discussed herein refers to slip or sliding on a microscopic or submicroscopic scale within the metal crystals. It is slip or sliding on a scale of magnitude vastly different from...