Title

OXIDATION‐ASSISTED FATIGUE CRACK GROWTH BEHAVIOR IN ALLOY 718‐PART II. APPLICATIONS

Document Type

Article

Date of Original Version

1-1-1991

Abstract

In previous work by the authors, a quantitative model based on a two‐stage oxidation mechanism was developed to describe the oxidation‐assisted crack growth behavior in alloy 718. This model is used here to predict the crack growth rate in this alloy at 650°C for two different loading conditions: one is a continuous cycle with a hold time duration of 300 s imposed at minimum load, the other is a continuous cycle without a hold time duration. The results obtained from applying the model to these loading profiles were then compared with those obtained experimentally. Good agreement was observed between the two data sets. Details of the model calculations are discussed, and suggestions to further extend the model capabilities are made in this paper. Copyright © 1991, Wiley Blackwell. All rights reserved

Publication Title

Fatigue & Fracture of Engineering Materials & Structures

Volume

14

Issue

7

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