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A paramount issue impacting the performance, safety, and life extension of current light-water reactors is the environment-induced cracking of metallic structural components. Understanding their structure and chemistry, as well as how they react to various aqueous environments, is important to determining their real-world behavior. Metallography is one of the tools in determining microstructure. Using a light etching technique, the crystallographic orientation of the metal can easily be observed. The Ni base weld metal has been acid etched to reveal crystallographic surface faceting.

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Document Title: Crystallographic faceting in a Ni base weld
Category: Chemical Imaging
Media Type: Photos
Date of Image/Photo: 2011
Background: Submitted as part of the 2011 Science as Art contest.
URL of this page: http://picturethis.pnl.gov/picturet.nsf/by+id/DRAE-8QFVDN

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