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Volume 76, Issue 3
1 June 2004
Aircraft Engineering and Aerospace Technology Cover Image for Volume 76, Issue 3
Editors
Phil Webb
Phil Webb
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Research Article| June 01 2004

A probabilistic model for prediction of LCF life of PM alloys

;
Xiao‐Jun Yan
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, People's Republic of China
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;
Hao‐Yue Li
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, People's Republic of China
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Jing‐Xu Nie
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, People's Republic of China
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Author & Article Information
Publisher: Emerald Publishing
Online ISSN: 1758-4213
Print ISSN: 1748-8842
© Emerald Group Publishing Limited
2004
Aircraft Engineering and Aerospace Technology: An International Journal (2004) 76 (3): 286–292.
https://doi.org/10.1108/00022660410536014

Inclusions have been shown to be the most significant factor to decrease the low cycle fatigue (LCF) life in powder metallurgy (PM) alloys used by most of turbine discs for advanced turboengines. In this paper, effects of inclusions on PM alloys' LCF life are evaluated through the definition of initial damage value D0 based on damage mechanics. By investigating the relationship between D0 and characteristic dimension of inclusions, Bussac's probabilistic model is extended to consider surface and internal inclusions together.

Keywords: Metallurgy, Alloys, Modelling
© Emerald Group Publishing Limited
2004
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