Abstract
As a first step of studying the mechanical behavior of cellular material made with tubes assembled by brazing, this work aims at characterizing the elasto-viscoplastic behavior of Inconel 600 tubes subjected to annealing pre-treatments representative of brazing process. Tensile tests highlighted rate sensitivity at room temperature and at 800 °C that can be attributed to microstructural evolutions occurring both during annealing and during the tests at 800 °C (dynamic recrystallization, recovery, grain growth and coarsening of precipitates). Post-mortem analysis based on Electron BackScattered Diffraction (EBSD) was carried out on broken samples. Local misorientations have been extracted from crystallographic orientation data in order to evaluate plastic residual strain. Kernel Average Misorientation (KAM) maps revealed high-strained area near nitrides precipitates for the annealed tubes loaded at room temperature and high strain rate. Comparisons of averaged misorientation are also discussed regarding microstructural evolutions and strain rate sensitivity.
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References
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© 2017 The Minerals, Metals & Materials Society
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Davoine, C. et al. (2017). Microstructural Characterization of Inconel 600 Tubes After Tensile Tests at Various Temperatures and Strain Rates. In: TMS, T. (eds) TMS 2017 146th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51493-2_21
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DOI: https://doi.org/10.1007/978-3-319-51493-2_21
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