At elevated temperatures, fatigue deformation and fracture are influenced by synergistic actions of several time dependent damage mechanisms. These include dynamic strain ageing, oxidation, creep and phase transformations. Studied are the influence of dislocation density, precipitates, strain rate, temperature and hold time on the high temperature low cycle fatigue behaviour of austenitic and ferritic steels and their weld joints and a Nimonic PE16 superalloy. Cycling hardening and softening response in various alloys would be discussed in terms of accompanying substructural changes.
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© 2008 Springer Science+Business Media B.V
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Mannan, S.L., Valsan, M. (2008). Microcracking in High Temperature Low Cycle Fatigue. In: Sih, G.C. (eds) Multiscale Fatigue Crack Initiation and Propagation of Engineering Materials: Structural Integrity and Microstructural Worthiness. Solid Mechanics and its Applications, vol 152. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-8520-8_7
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DOI: https://doi.org/10.1007/978-1-4020-8520-8_7
Publisher Name: Springer, Dordrecht
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Online ISBN: 978-1-4020-8520-8
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