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Home » Blogs » Industrial Heating Experts Speak Blog » George Vander Voort - Metallography

Industrial Heating Experts Speak Blog
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Industrial Heating Blog
Learn from leading experts in the thermal processing industry. Read Industrial Heating’s Expert Speak blogs. Helpful and timely technical information from those who know.

Blog Topics

Dan Herring - Heat Treatment

David Pye - Metallurgy

Dan Kay - Brazing

Debbie Aliya - Failure Analysis

George Vander Voort - Metallography

Thomas Joseph - Intellectual Property

Omar Nashashibi – Government

Reed Miller – Thermal Processing

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Metallography of Surface Treatments, Coatings (part 1)

Author voort
George F. Vander Voort
March 12, 2012
No Comments
A wide variety of surface treatments and coatings are applied to metals to enhance their performance, for example, to improve fatigue resistance, increase wear resistance, or improve corrosion or oxidation resistance.
Read More

Microstructure of Nitrided Steels Q&A (part 2)

Author voort
George F. Vander Voort
January 12, 2012
No Comments
My last blog post was followed by further discussion that might be helpful to other readers.
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Microstructure of Nitrided Steels Q&A

Author voort
George F. Vander Voort
December 20, 2011
No Comments
My article in the November issue of Industrial Heating generated some interest and may have caused some unintended confusion. Here’s an edited comment received and my edited reply.
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Use of Color Metallographic Techniques to Study Welds (part 2)

Author voort
George F. Vander Voort
December 2, 2011
No Comments
Fig. 1a. Example of a welded low-carbon steel etched with 2% nital showing the clear superiority of color etching in revealing the grain structure. The as-cast weld metal is shown
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Use of Color Metallographic Techniques to Study Welds

Author voort
George F. Vander Voort
November 18, 2011
No Comments
Welding is a very important joining process and has been used extensively for at least the past 60 years. Like most processes, there is a need to control welding and ensure a high quality end result.
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Revealing Prior-Austenite Grain Boundaries by Etching

Author voort
George F. Vander Voort
November 4, 2011
No Comments
Before specimens can be etched to reveal prior-austenitic grain boundaries, they must be prepared to a high quality level.
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Bias in Grain-Size Chart Ratings

Author voort
George F. Vander Voort
October 3, 2011
No Comments
When I worked for Carpenter Technology Corporation in their research center, we encountered several instances where production-lab chart grain-size ratings were between 4 and 5 for a number of specimens on an order (these orders required tests on 20 specimens from different bars).
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Study of Selective Etching of Carbides in Steel (part 2)

Author voort
George F. Vander Voort
September 1, 2011
No Comments
A variety of etchants were tried to darken the matrix.
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Study of Selective Etching of Carbides in Steel (part 1)

Author voort
George F. Vander Voort
August 15, 2011
No Comments
A number of etchants have been reported in the literature to selectively outline, outline and color, or attack specific types of carbides in steels.
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Identification of Phases in Stainless Steels by Selective Etching (part 2)

Author voort
George F. Vander Voort
July 21, 2011
No Comments
The specimens were mounted and prepared metallographically. Each was etched with the reagents described below. They were re-prepared between etchants. The etchants used were as follows.
Read More
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