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color metallography

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Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003752
EISBN: 978-1-62708-177-1
... etching color etchants color metallography differential interference contrast illumination film formation molybdate films optical methods polarized light sulfide films thermal methods tint etching vapor deposition THE USE OF COLOR in metallography has a long history, with color micrographs...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006342
EISBN: 978-1-62708-179-5
... the general preparation of metallographic specimens and the methods of macroscopic and microscopic examination. Usually, gray-scale (black-and-white) metallography is sufficient for microstructural analysis of cast irons. The article discusses the use of color metallography of gray irons and ductile irons...
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Published: 31 August 2017
the standard etchants. See the article “Metallography and Microstructures of Cast Iron” in this Volume for more detail on color metallography. More
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006351
EISBN: 978-1-62708-179-5
... of color etchants is addressed, with additional coverage on colored metallography, in the article “Metallography and Microstructures of Cast Iron” in this Volume. Color etchants often can reveal detail that cannot be seen with standard black and white etchants. Although color etchants do require a more...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006343
EISBN: 978-1-62708-179-5
... with the very name of gray iron as an indication of the surface color when a specimen of graphitized iron is fractured. Further advances in the characterization followed from the work of Henry Clifton Sorby ( Ref 1 ) as the father of metallography. Sorby developed the method of polishing and etching metallic...
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Published: 31 August 2017
side). See the article “Metallography and Microstructures of Cast Iron” in this Volume for the color version. Source: Ref 15 More
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Published: 31 August 2017
the secondary (eutectic) austenite. See the article “Metallography and Microstructures of Cast Iron” in this Volume for the color version. Source: Ref 15 More
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Published: 31 August 2017
in the center of the eutectic cells. See the article “Metallography and Microstructures of Cast Iron” in this Volume for the color version. Courtesy of S. Vazehrad More
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Published: 31 August 2017
Fig. 5 Micrograph of color-etched gray iron sample with hypoeutectic composition revealing the primary austenite network. See the article “Metallography and Microstructures of Cast Iron” in this Volume for the color version. More
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006684
EISBN: 978-1-62708-213-6
... of specimen preparation are not covered in this article as they are covered in great depth for all commercially used alloy systems, together with the use of the light microscope, interpretation of microstructure, and color metallography ( Ref 1 – 18 ). This article concentrates on how to reveal microstructure...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006350
EISBN: 978-1-62708-179-5
.... Control of the nodularity of graphite in ductile irons is critical to their performance. Details concerning the characterization of the graphite nodules are presented. Additional information on general procedures, effects of preparation on graphite retention, and color metallography also are addressed...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003749
EISBN: 978-1-62708-177-1
... from film deposition. The difference in reflectivity (Δ R ) between phases 1 and 2 is much greater with a film (Δ R n ) than without (Δ R 1 ). Several methods exist for film formation on specimen surfaces in metallography: Heat tinting (thermal oxidation) Color (tint) etching...
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Published: 31 August 2017
Fig. 1 (left) Gray iron sample treated with direct austempering after solidification. (right) Crystallographic orientation map obtained by electron backscatter diffraction (EBSD). See the article “Metallography and Microstructures of Cast Iron” in this Volume for a color version of the EBSD More
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Published: 31 August 2017
Fig. 19 Microstructure of pearlitic ductile iron containing cementite (C) particles and cementite in ledeburite (L), which will harm machinability. Note the ferrite halos (FH) around the nodules. The specimen was etched with 2% nital. For version with color etching using Beraha’s CdS reagent More
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Published: 01 December 2004
Fig. 49 Example of energy-dispersive spectroscopy (EDS)-aided metallography in interpretation of color images in polarized light. The Π phase (Al 8 FeMg 3 Si 6 ) in an Al-Si-Cu-Ni alloy is indicated by EDS for micrographs with (a) first position of cross poles and (b) second position of cross More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006116
EISBN: 978-1-62708-175-7
... and alloying method, and the microstructure, metallography is the only set of test methods capable of providing information on all three contributors. This is accomplished by the examination of properly selected and prepared specimens. Metallic specimens, both porous and pore-free, are opaque...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003754
EISBN: 978-1-62708-177-1
... that attack or color specific phases of interest. Selective etchants are widely used for quantitative metallography, particularly if performed using an automated image-analysis device. In either case, etching must be carefully performed to reveal the microstructure with clarity. Microscope Components...
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Published: 31 August 2017
) 100× and (d) 200×. See also the article “Metallography and Microstructures of Cast Iron” in this Volume for color image from etching with aqueous 10% sodium metabisulfite. More
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Published: 31 August 2017
observed after etching with (c) 2% nital (original magnification: 100×) and (d) Vilella’s reagent (original magnification: 200×). Etching revealed little that was not seen in the as-polished condition, but color etching with strong aqueous 10% sodium metabisulfite can reveal the dendritic segregation More
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006763
EISBN: 978-1-62708-295-2
... monochromatic lighting and black-and-white photography. However, color photography is advantageous in metallography for showing heating effects, corrosion product, and microstructural features with color. Additional and expanded information on optical metallography can be found in Metallography...