Elastoplastic Deformation and Damage Process in Duplex Steel Studied Using Synchrotron and Neutron Diffraction

Abstract:

In the present work, the mechanical behavior of phases in duplex steel during tensile test was studied. Special interest was taken in the analysis of damage process just before failure. In this aim two diffraction methods: in-situ time of flight neutron diffraction and X-ray synchrotron diffraction were applied. Using diffraction data, the slip mechanism on crystallographic planes during plastic deformation was investigated. In the case of aged UR45N steel, it was found that significant softening caused by damage process was initiated in the ferritic phase. The lattice strains measured in situ by two above mentioned diffraction methods were compared with prediction of the self-consistent model.

• Periodical: Materials Science Forum (Volume 905)
• Pages: 9-16
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.905.9
• Online since: August 2017
• Authors: Yu Chen Zhao*, Léa Le Joncour, Andrzej Baczmański, Manuel François, Sebastian Wroński, Benoit Panicaud, Elżbieta Gadalińska, Chedly Braham, Thomas Buslaps, Anna Paradowska
• Keywords: Damage Mechanisms, Diffraction Measurements, Numerical Algorithms, Two-Phased Polycrystalline Steel, Yield Conditions

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