Explanation Take the value of L.M as 37 from 'The Larsen-Miller parameter for ICONEL alloy 601' figure -7.31, at stress 4000psi from the textbook. The formula of Larsen-Miller Parameter is as follows: L . M = [ 492 + 9 5 T ( C 0 ) ] ( 14.883 + log [ t ] ) × 10 − 3 Putting the values, 37 = [ 492 + 9 5 ( 925 ) ] ( 14.883 + log [ t ] ) × 10 − 3 14.883 + log [ t ] = 37 2157 × 10 − 3 log [ t ] = 2.27 t = 186.4 h The expected life of the component is doubled which means the new time is, t ' = 2 t t ' = 2 × 186.4 t ' = 372.8 h The applied stress over the iron-chromium-nickel alloy is not changing resulting in the same value of Larsen-Miller parameter

Essentials of Materials Science and Engineering, SI Edition

4th Edition

ISBN: 9781337672078

Author: ASKELAND, Donald R., WRIGHT, Wendelin J.

Publisher: Cengage Learning

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Question

Chapter 7, Problem 7.60P

Interpretation Introduction

Interpretation:

The temperature should be determined for the given iron-chromium-nickel alloy at which expected a life of the component gets doubled.

Concept introduction:

When the time rate of deformation of any specimen or materials at constant temperature subject to applied mechanical stress is determined, it is called a creep rate.

From the Larsen-Miller parameter, the stress rapture occurring at different temperature values can be obtained from the equivalent times calculations.

Expert Solution & Answer

Chapter 7 Solutions

Essentials of Materials Science and Engineering, SI Edition

Ch. 7 - Prob. 7.1P Ch. 7 - Prob. 7.2P Ch. 7 - Prob. 7.3P Ch. 7 - Prob. 7.4P Ch. 7 - Prob. 7.5P Ch. 7 - Prob. 7.6P Ch. 7 - Prob. 7.7P Ch. 7 - Prob. 7.8P Ch. 7 - Prob. 7.9P Ch. 7 - Prob. 7.10P

Ch. 7 - Prob. 7.11P Ch. 7 - Prob. 7.12P Ch. 7 - Prob. 7.13P Ch. 7 - Prob. 7.14P Ch. 7 - Prob. 7.15P Ch. 7 - Prob. 7.16P Ch. 7 - Prob. 7.17P Ch. 7 - Prob. 7.18P Ch. 7 - Prob. 7.19P Ch. 7 - Prob. 7.20P Ch. 7 - Prob. 7.21P Ch. 7 - Prob. 7.22P Ch. 7 - Prob. 7.23P Ch. 7 - Prob. 7.24P Ch. 7 - Prob. 7.25P Ch. 7 - Prob. 7.26P Ch. 7 - Prob. 7.27P Ch. 7 - Prob. 7.28P Ch. 7 - Prob. 7.29P Ch. 7 - Prob. 7.30P Ch. 7 - Prob. 7.31P Ch. 7 - Prob. 7.32P Ch. 7 - Prob. 7.33P Ch. 7 - Prob. 7.34P Ch. 7 - Prob. 7.35P Ch. 7 - Prob. 7.36P Ch. 7 - Prob. 7.37P Ch. 7 - Prob. 7.38P Ch. 7 - Prob. 7.39P Ch. 7 - Prob. 7.40P Ch. 7 - Prob. 7.41P Ch. 7 - Prob. 7.42P Ch. 7 - Prob. 7.43P Ch. 7 - Prob. 7.44P Ch. 7 - Prob. 7.45P Ch. 7 - Prob. 7.46P Ch. 7 - Prob. 7.47P Ch. 7 - Prob. 7.48P Ch. 7 - Prob. 7.49P Ch. 7 - Prob. 7.50P Ch. 7 - Prob. 7.51P Ch. 7 - Prob. 7.52P Ch. 7 - Prob. 7.53P Ch. 7 - Prob. 7.54P Ch. 7 - Prob. 7.55P Ch. 7 - Prob. 7.56P Ch. 7 - Prob. 7.57P Ch. 7 - Prob. 7.58P Ch. 7 - Prob. 7.59P Ch. 7 - Prob. 7.60P Ch. 7 - Prob. 7.61P Ch. 7 - Prob. 7.62P Ch. 7 - Prob. 7.63P Ch. 7 - Prob. 7.64DP Ch. 7 - Prob. 7.65DP Ch. 7 - Prob. 7.66DP Ch. 7 - Prob. 7.67DP Ch. 7 - Prob. K7.1KP

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