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From Equation 8.19, if the logarithm of is plotted versus

From Equation 8.19, if the logarithm of is plotted versus the logarithm of ?, then a straight

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From Equation 8.19, if the logarithm of is plotted versus the logarithm of ?, then a straight line should result, the slope of which is the stress exponent n. Using Figure 8.31, determine the value of n for the S-590 alloy at 925?C, and for the initial (i.e., lower-temperature) straight line segments at each of 650?C, 730?C, and 815?C.

Transcribed Image Text:

e, = K" (8.19) 200 30 20 100 80 60 427°C (800°F) 10 40 30 538°C (1000 F) 20 2 10 649°C (1200°F) 10-7 106 10-5 Steady-state creep rate (h) Stress (MPa) すの (Isd 01) ssas

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Fundamentals of Materials Science and Engineering An Integrated Approach

ISBN: 978-1118061602

4th Edition

Authors: David G. Rethwisch

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Question Posted: Jul 02, 2011 10:42 AM

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