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metallograph

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Published: 01 January 2002
Fig. 19 Optical metallograph. (a) Typical optical metallograph used in failure analysis photography. (b) Optical metallograph photograph of a microstructure More
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Published: 01 December 2004
Fig. 4 Inverted metallograph. Features include selection of incident light, various contrasting methods, camera, and microhardness tester. Courtesy of Leica, Inc. More
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Published: 27 April 2016
Nitrogen pressure: ∼3 MPa Source: L. Brewer and S.-G. Chang, Metallography, Structures and Phase Diagrams , Vol 8, Metals Handbook , 8th ed., American Society for Metals, 1973 ( Ref 5 ) More
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Published: 30 August 2021
Fig. 90 In situ metallograph of base metal microstructure near the crack. Etched in 10% oxalic acid. Original magnification: 50× More
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Published: 15 May 2022
Fig. 31 Optical metallograph inspection of a mounted section of exemplar cross section of fracture More
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Published: 15 May 2022
Fig. 32 Optical metallograph microstructure image of a mounted section of exemplar crankshaft cross section More
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Published: 30 January 2024
Fig. 10 Example Romanesque kaptorga SEM secondary electron metallograph and fractograph. (a) Metallograph showing corrosion pitting coalescing to form intergranular cracks. (b) Fractograph showing intergranular stress-corrosion cracking being destroyed by general corrosion proceeding inward More
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Published: 30 January 2024
Fig. 21 Optical metallograph (nital etch) of a cross section of the pile-shoe bar, including the opposite fracture surface to that shown in Fig. 19 ; see the text for further explanation. Courtesy of Tim Hattenberg, Royal Netherlands Aerospace Centre, Marknesse, the Netherlands More
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003766
EISBN: 978-1-62708-177-1
... Abstract Tool steels are prepared for metallographic examination in the same way as carbon steels with a few variations owing to hardness and alloying differences. This article explains what makes tool steels different and how to compensate for it when sectioning, mounting, grinding, polishing...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003746
EISBN: 978-1-62708-177-1
... Abstract This article describes the sectioning process, some general practices, common tools, and guidelines on how to select a cutting tool for a given metallographic sectioning operation. It provides a discussion on the consumable-abrasive cutting and nonconsumable-abrasive cutting methods...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003245
EISBN: 978-1-62708-199-3
... Abstract Proper sectioning of the surface to be examined is a very important step in preparing steel specimens. The first step in preventing damage to the metallurgical structure is to minimize the amount of sectioning that is done. This article discusses the various metallographic techniques...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... Abstract This article provides a discussion on the metallographic techniques used for failure analysis, and on fracture examination in materials, with illustrations. It discusses various metallographic specimen preparation techniques, namely, sectioning, mounting, grinding, polishing...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... Abstract Metallographic examination is one of the most important procedures used by metallurgists in failure analysis. Typically, the light microscope (LM) is used to assess the nature of the material microstructure and its influence on the failure mechanism. Microstructural examination can...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003769
EISBN: 978-1-62708-177-1
... and microstructures of wrought and cast forms. Powder metallurgy, semisolid processing, and composite forms are discussed in other articles of this Volume. Metallographic preparation of aluminum alloys may vary considerably due to the wide range of chemical compositions and resulting hardness. Softer alloys...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003244
EISBN: 978-1-62708-199-3
..., either manually or by the use of image analyzers. Preparation of metallographic specimens generally requires five major operations: sectioning, mounting, grinding, chemical polishing, and etching. The article provides information on the principles of technique selection in mechanical polishing...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003247
EISBN: 978-1-62708-199-3
... Abstract This article describes the metallographic technique for nonferrous metals and special-purpose alloys. These include aluminum alloys, copper and copper alloys, lead and lead alloys, magnesium alloys, nickel and nickel alloys, magnetic alloys, tin and tin alloys, titanium and titanium...
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Published: 09 June 2014
Fig. 36 Example of metallographic evaluation of an induction-hardened shaft, revealing hardness pattern in both transverse and longitudinal sections. Courtesy of Inductoheat, Inc. More
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Published: 01 January 1986
Fig. 1 One method of mounting the sample to retain flatness for metallographic examination. The mount can also be filled with ground glass, pelletized Al 2 O 3 , or another hard material to maintain flatness. More
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Published: 01 January 1986
Fig. 2 The effect of disturbed metal on the metallographic appearance of a plain carbon steel. (a) A layer of disturbed metal—an artifact structure caused by grinding damage—covers the polished surface. (b) The layer of disturbed metal is removed, and the structure is revealed to be lamellar More
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Published: 01 October 2014
Fig. 7 Metallographically prepared specimen of treated austenitic stainless steel. The uniform and conformal nature of the case has been revealed by etching with Kane's reagent. An advantage of the gas phase treatment is the ability to treat all exposed surfaces, even deep blind holes More