Abstract
This paper describes a model used to represent the cyclic mechanical behaviour of P91 martensitic steel. Low cycle fatigue tests were conducted at 600 °C using a thermo-mechanical fatigue test machine. A unified, Chaboche viscoplasticity model, was used to model the behaviour of the steel. The micro structure of the steel at different life fractions of the tests was investigated using scanning and transmission electron microscope images. The viscoplasticity model, with two stages of softening period, has resulted in better prediction capability for the cyclic behaviour of the steel for an initially undamaged material prior to crack initiation.
Original language | English |
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Title of host publication | 11th International Conference on the Mechanical Behavior of Materials (ICM11) |
Place of Publication | Lake Como, Italy |
DOIs | |
Publication status | Published - 2011 |
Event | 11th International Conference on the Mechanical Behavior of Materials (ICM11) - Como, Italy Duration: 5 Jun 2011 → 9 Jun 2011 |
Conference
Conference | 11th International Conference on the Mechanical Behavior of Materials (ICM11) |
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Country/Territory | Italy |
City | Como |
Period | 5/06/11 → 9/06/11 |
Keywords
- Viscoplasticity model P91 steel Cyclic softening FE prediction Microstructural evolution