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Meeting 2025 TMS Annual Meeting & Exhibition
Symposium Neutron and X-ray Scattering in Materials Science and Engineering
Presentation Title The influence of grain size on the deformation-induced martensitic transformation in austenitic steels: from grain-average to single-grain behavior studied by in-situ high-energy synchrotron X-ray diffraction.
Author(s) Chen Cai, Benjamin Neding, Gaoming Zhu, Peter Hedström
On-Site Speaker (Planned) Chen Cai
Abstract Scope Non-destructive in-situ measurements of microstructure evolution in austenitic steels during tensile loading was conducted by high-energy synchrotron x-ray diffraction. The formation and evolution of ε-martensite and α’-martensite were quantified by Rietveld refinement for grain-averaged diffraction data for on the one hand a fine grained and on the other a coarse grained specimen at high strain. Moreover, for the coarse grained specimen, single-grain data was also collected by a combining far-field and near-field HEDM at low applied strain. The combination of these time-resolved grain-average and single-grain diffraction results allowed for the determination of relationship between macroscopic deformation and deformation-induced martensitic transformation and the effect of grain size in austenitic steels.
Proceedings Inclusion? Planned:
Keywords Phase Transformations,

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