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 />
28 METALLOGRAPHY<br />
Copyright © 1984 <strong>ASM</strong> <strong>International</strong> ®<br />
All rights reserved.<br />
www.asminternational.org<br />
Figure 1-186 Flow lines in sample shown in Fig. l-18a that were revealed by deep-acid etching <strong>and</strong><br />
inking.<br />
more plainly visible after inking, as shown in Figure 1-186. India ink was rubbed<br />
over the surface of the component <strong>and</strong> seeped into the etched-out flow lines; the<br />
excess ink was wiped off the top surface.<br />
Figure l-19a shows a disc from a macroetched forging of Ti-6A1-4V; flow<br />
lines <strong>and</strong> segregation can be observed. Figure 1-196 shows the microstructure at<br />
the four areas. Area A exhibits a uniform alpha-beta structure, while the other<br />
three areas exhibit coarse, stringy alpha phase <strong>and</strong> coarse beta phase.
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