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Callister - An introduction - 8th edition

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7.12 Recrystallization • 221<br />

(e)<br />

100 m<br />

(f)<br />

100 m<br />

Figure 7.21<br />

(continued)<br />

Figure 7.22 The<br />

influence of<br />

annealing<br />

temperature (for an<br />

annealing time of<br />

1 h) on the tensile<br />

strength and ductility<br />

of a brass alloy. Grain<br />

size as a function of<br />

annealing<br />

temperature is<br />

indicated. Grain<br />

structures during<br />

recovery,<br />

recrystallization, and<br />

grain growth stages<br />

are shown<br />

schematically.<br />

(Adapted from<br />

G. Sachs and K. R.<br />

Van Horn, Practical<br />

Metallurgy, Applied<br />

Metallurgy and the<br />

Industrial Processing<br />

of Ferrous and<br />

Nonferrous Metals<br />

and Alloys, American<br />

Society for Metals,<br />

1940, p. 139.)<br />

600<br />

500<br />

400<br />

300<br />

Cold-worked<br />

and recovered<br />

grains<br />

Grain size (mm)<br />

Tensile strength (MPa)<br />

0.040<br />

0.030<br />

0.020<br />

0.010<br />

Recovery<br />

<strong>An</strong>nealing temperature (°F)<br />

400 600 800 1000 1200<br />

Tensile strength<br />

Ductility<br />

Recrystallization<br />

New<br />

grains<br />

Grain growth<br />

100 200 300 400 500 600 700<br />

<strong>An</strong>nealing temperature (°C)<br />

60<br />

50<br />

40<br />

30<br />

20<br />

Ductility (%EL)

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