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 />
Copyright © 1984 <strong>ASM</strong> <strong>International</strong> ®<br />
All rights reserved.<br />
www.asminternational.org<br />
MACROSTRUCTURE 29<br />
' S ~t£*1*te' .<br />
Figure l-19o Macroetching of a section from a Ti-6A1-4V forging revealing metal flow pattern <strong>and</strong><br />
segregation (etchant, solution of 10 mL HF, 15 mL HN03, <strong>and</strong> 75 mL H20, swabbed for 2 min at room<br />
temperature). (Courtesy of J. A. Hendrickson, Wyman-Gordon Co.)<br />
Figure 1-19A Microstructure of the four areas shown in Fig. l-19a. Area A exhibits the desired<br />
uniform alpha-beta microstructure. Areas B, C, <strong>and</strong> D show regions of coarse, linear alpha (white)<br />
<strong>and</strong> course beta (dark) phase (60 x ; 10 seconds immersed with heavy agitation in 8 g NaOH in 60 mL<br />
water, heated to a boil after addition of 10 mL H202). (Courtesy of J. A. Hendrickson, Wyman-<br />
Gordon Co.)
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