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Single crystal elastic constants of austenite and ferrite phases in high-nitrogen duplex stainless steel were evaluated by an elastic self-consistent model combined with an optimization process using in-situ neutron diffraction data. The optimized elastic constants were validated by the indentation moduli of each phase obtained by nanoindentation. In addition, the stacking fault energy of austenite...
In situ and ex situ neutron diffraction were used to investigate the deformation behavior of high-nitrogen, nickel-free duplex stainless steel. During in situ deformation, both ferrite and austenite deformed plastically to the same degree. The stacking fault energy of austenite was evaluated to be 36.2mJm –2 from ex situ neutron profiles, which correlated well with the observed deformation...
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