Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 400, Issue -, Pages 256-259Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2005.03.040
Keywords
Ni3Al; constitutive model; yield anomaly; cross-slip locking; exhaustion hardening
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A constitutive model was developed in order to capture the unique thermo-mechanical flow behavior of U-structured Ni-3(Al, X) alloys. This model utilized a framework for flow-stress partitioning, which was previously proposed by Ezz and Hirsch, and incorporated a model for exhaustion hardening proposed by Caillard. The simulation results well represent the major aspects of the thermo-mechanical flow behavior of Ni-3(Al, X) alloys, such as a flow-stress anomaly, its strain dependence and a work-hardening rate anomaly. Selected limitations are discussed along with our current efforts toward extending the present model. Published by Elsevier B.V.
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