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Macro and Micro mechanical in-situ characterization using synchrotron diffraction of Architectured micro-composite Duplex Stainless Steels

By Hasan Naser, Frédéric De Geuser, Marc Mantel, Muriel Véron and Alexis Deschamps


International audienceThe mechanical behavior of micro-composites Duplex Stainless steels (DSS) produced by Accumulative re-Bundling and Drawing (ABD) has been investigated. We evidenced a systematic increase in the yield strength, as a function of the manufacturing step, independently from the phases' volume fraction. A simple rule of mixture (ROM) successfully predicted the first generation of composites presenting a simple microstructure. However, a modified ROM taking into account the contribution of each component and its grain size could not predict the mechanical response of the composites of higher generation. An in-depth analysis is conducted to investigate the microstructure-mechanical behavior relationship and to rationalize the resultant mechanical behavior from that of each constitutive phase. For this purpose, in-situ synchrotron High Energy X-ray Diffraction measurements during uniaxial tensile experiments have been carried out to calculate the strain partitioning within each phase of the composites

Topics: Duplex Stainless steel, Synchrotron X-Ray Diffraction, In-situ tensile tests, Micro- composites, Micromechanics, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
Publisher: 'Elsevier BV'
Year: 2020
DOI identifier: 10.1016/j.msea.2020.139852
OAI identifier: oai:HAL:hal-02940931v1
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