Metallography: Principles and Practices - ASM International
Metallography: Principles and Practices - ASM International
Metallography: Principles and Practices - ASM International
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<strong>Metallography</strong>: <strong>Principles</strong> <strong>and</strong> Practice (#06785G)<br />
Author(s): George F. V<strong>and</strong>er Voort<br />
22 METALLOGRAPHY<br />
Copyright © 1984 <strong>ASM</strong> <strong>International</strong> ®<br />
All rights reserved.<br />
www.asminternational.org<br />
Figure 1-12* Hot-acid etching of<br />
a longitudinal disc from the<br />
center of the disc shown in Fig.<br />
l-12a revealed the extent of the<br />
open center condition. (Courtesy<br />
of M. Schmidt, Bethlehem<br />
Steel Corp.)<br />
Figure 1-13 (Top of opposite page) Hot-acid etching of a transverse disc from continuously cast AISI<br />
1008 carbon steel revealed a star-pattern open condition. (Courtesy of M. Schmidt, Bethlehem Steel<br />
Corp.)<br />
Figure 1-14 (Bottom of opposite page) Hot-acid etching of this transverse section of continuously cast<br />
AISI 4140 revealed a dendritic structure, center porosity, <strong>and</strong> a b<strong>and</strong> (arrow) from induction stirring.<br />
(Courtesy of B. L. Bramfitt, Bethlehem Steel Corp.)
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