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Basic laboratory setup for electropolishing and electrolytic etching

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in Metallographic Specimen Preparation > Metallographer’s Guide: Practices and Procedures for Irons and Steels
Published: 01 March 2002
Fig. 7.44 Basic laboratory setup for electropolishing and electrolytic etching More
Image

Simple laboratory system for electropolishing and electroetching. Source: ...

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in Metallography > Inspection of Metals: Understanding the Basics
Published: 01 April 2013
Fig. 4 Simple laboratory system for electropolishing and electroetching. Source: Ref 1 More
Image

Current-voltage curve for electropolishing of commercially pure titanium in...

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in Cleaning and Finishing > Titanium: A Technical Guide
Published: 01 December 2000
Fig. 11.4 Current-voltage curve for electropolishing of commercially pure titanium in a mixed acid solution. Polishing occurs on the plateau. More
Image

Detrimental effect of the electropolished surface condition on the carburiz...

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in Carburization and Metal Dusting > High-Temperature Corrosion and Materials Applications
Published: 01 November 2007
Fig. 5.39 Detrimental effect of the electropolished surface condition on the carburization resistance of HK-40 alloy tested at 825 °C (1520 °F) in an environment with 0.8 a c and the oxygen potential shown in Fig. 5.18 . Source: Ref 35 More
Book Chapter

Macroetchants for Revealing Strain Patterns in Nonferrous Metals

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850536
EISBN: 978-1-62708-260-0
... solution 20 mL HC1 20 mL HNO3 5 mLHF 40 mL H 2 0 15 mL ethanol Etchant: 67 mL lactic acid 22 mL HNO3 11 m L H C l Electropolish: 87 mL methanol 8 mL H2S04 3 mL HNO3 2 mLHF Etchant: Solutionized Udimet-700 50 mL HNO3 50 mL HC1 Electropolish: 87 mL methanol 13 mL H 2 S 0 4 Etchant: Solutionized and aged...
Abstract
This appendix lists etch compositions and procedures that reveal strain patterns in aluminum and nickel-base superalloys.
View PDF for content titled, Macroetchants for Revealing Strain Patterns in Nonferrous Metals
Book Chapter

Dislocation Etching Techniques

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850712
EISBN: 978-1-62708-260-0
...) AgBr AgCl Al (99.99%) 5 mL ethylenediamine 30 mL water 50 mL HC1 47 mL H N 0 3 3mLHF Comments Chemically polish with solution a or electrolytically polish with solution b at 4-5 V dc, 0.15 A/cm2 with current on 1 s and off 1 s. Etch in solution c for 30 s (Levinstein and Robinson). Electropolish...
Abstract
This appendix is a list of etchants that are used to reveal dislocations in various metals, alloys, and compounds.
View PDF for content titled, Dislocation Etching Techniques
Image

Schematic illustrating the classic current density versus voltage relations...

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in Specimen Preparation for Light Microscopy > Metallography: Principles and Practice
Published: 01 December 1984
Figure 2-24 Schematic illustrating the classic current density versus voltage relationship for electropolishing solutions. More
Image

Schematic of through-thickness residual-stress measurement in cold-sprayed ...

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in Cold Spray—Advanced Characterization > High Pressure Cold Spray: Principles and Applications
Published: 01 June 2016
Fig. 5.25 Schematic of through-thickness residual-stress measurement in cold-sprayed coating by electropolishing and removal of layers More
Image

Optical photomicrographs of sheets of α ′ martensite in Fe–18Cr–8Ni taken ...

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in Martensitic Phase Transformations > Materials at Low Temperatures
Published: 01 June 1983
Figure 9.9 Optical photomicrographs of sheets of α ′ martensite in Fe–18Cr–8Ni taken after sequential electropolishing and etching steps. Sequence begins at top. More
Image

Stage I half-crack fatigue propagation rates at various alternating stresse...

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in Avoidance, Control, and Repair of Fatigue Damage[1] > Fatigue and Durability of Structural Materials
Published: 01 March 2006
Fig. 11.57 Stage I half-crack fatigue propagation rates at various alternating stresses in electropolished and glass bead-blasted material tested in bending. Source: Ref 11.69 More
Image

Effect of applied stress on the time to failure of solution-annealed and el...

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in Stress-Corrosion Cracking of Stainless Steels[1] > Stress-Corrosion Cracking: Materials Performance and Evaluation
Published: 01 January 2017
Fig. 4.12 Effect of applied stress on the time to failure of solution-annealed and electropolished type 347 tested in a magnesium chloride solution boiling at 145 °C (293 °F). After Ref 4.42 More
Image

Cross-polarized light used to reveal the microstructure of uranium (electro...

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in Light Microscopy > Metallography: Principles and Practice
Published: 01 December 1984
Figure 4-17 Cross-polarized light used to reveal the microstructure of uranium (electropolished with phosphoric acid, alcohol, and ethylene glycol), 75×. (Courtesy of B. C. Leslie, Oak Ridge National Laboratory.) More
Image

Microcrack growth in Ti-6Al-4V. (a) Room temperature. (b) 500 °C (930 °F). ...

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in Fatigue and Fracture of Engineering Alloys > Fatigue and Fracture: Understanding the Basics
Published: 01 November 2012
Fig. 53 Microcrack growth in Ti-6Al-4V. (a) Room temperature. (b) 500 °C (930 °F). SP, shot peened; EP, electropolished; SR, stress relieved. Source: Ref 34 More
Book Chapter

Specimen Preparation for Light Microscopy

Available to Purchase

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850060
EISBN: 978-1-62708-260-0
... that is to be machined away during further processing. This procedure is, however, more expensive than the others, but the sample is more representative. As an alternative, nondestructive metallographic examination can be performed at a specific surface location using either mechanical or electropolishing methods...
Abstract
This chapter explains how to prepare metallographic samples for light microscopy and how to anticipate and avoid related problems. It describes standard practices and procedures for sectioning, mounting, grinding, and polishing and identifies common defects along with their causes and cures. It also provides recommendations for handling specific materials and addresses safety concerns.
View PDF for content titled, Specimen Preparation for Light Microscopy
Image

Cast Rene 220 nickel-base superalloy using dark-field electron microscopy. ...

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in Some Additional Microstructural Information > Superalloys: A Technical Guide
Published: 01 March 2002
Fig. B.8 Cast Rene 220 nickel-base superalloy using dark-field electron microscopy. Showing γ″ disks with finer, less extensive γ′ in background. The specimen was electropolished and etched with methanolic 10% HCl. More
Image

S - N curves ( R = –1) for Ti-6Al-4V with a fine lamellar microstructure....

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in Fatigue and Fracture of Engineering Alloys > Fatigue and Fracture: Understanding the Basics
Published: 01 November 2012
Fig. 52 S - N curves ( R = –1) for Ti-6Al-4V with a fine lamellar microstructure. (a) Room temperature. (b) 500 °C (930 °F). SP, shot peened; EP, electropolished; SR, stress relieved. Source: Ref 34 More
Image

Microstructure of 17-7 PH. (a) Surface tilting caused by martensite formati...

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in Stainless Steels > Steels: Processing, Structure, and Performance
Published: 01 January 2015
Fig. 23.29 Microstructure of 17-7 PH. (a) Surface tilting caused by martensite formation on refrigeration to −73 °C (−100 °F). (b) Refrigerated and aged at 480 °C (896 °F). Electropolished and etched in chromeacetic acid electrolyte. Light micrographs. Source: Ref 23.51 More
Image

Wrought IN-718 nickel-base superalloy after 871 °C (1600 °F) for 7300 h at ...

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in Some Additional Microstructural Information > Superalloys: A Technical Guide
Published: 01 March 2002
Fig. B.6 Wrought IN-718 nickel-base superalloy after 871 °C (1600 °F) for 7300 h at 469 MPa (68 ksi) showing δ at grain boundary, γ′ (cuboids) and γ″ (disks) in grains. The specimen was electropolished and etched with methanolic 10% HCl. More
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Thermogravimetric testing in H 2 -24CO-2H 2 O at 600 °C (1112 °F) for alloy...

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in Carburization and Metal Dusting > High-Temperature Corrosion and Materials Applications
Published: 01 November 2007
Fig. 5.77 Thermogravimetric testing in H 2 -24CO-2H 2 O at 600 °C (1112 °F) for alloy 800 (Fe-21Cr-32Ni) in three different surface conditions: as-ground surface (to 600-grit), cold-rolled (as-received surface), and electropolished surface. Source: Ref 101 More
Image

Thermogravimetric testing in H 2 -24CO-2H 2 O at 600 °C (1112 °F) for Type ...

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in Carburization and Metal Dusting > High-Temperature Corrosion and Materials Applications
Published: 01 November 2007
Fig. 5.78 Thermogravimetric testing in H 2 -24CO-2H 2 O at 600 °C (1112 °F) for Type 310SS (Fe-25Cr-20Ni) in three different surface conditions: as-ground surface (to 600-grit), cold-rolled (as-received surface), and electropolished surface. Source: Ref 101 More