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Revealing cyclic hardening mechanism of a TRIP steel by real-time in situ neutron diffraction...

by Dunji Yu, Ke An, Yan Chen, Xu Chen
Publication Type
Journal
Journal Name
Scripta Materialia
Publication Date
Page Numbers
45 to 48
Volume
89

Real-time in situ neutron diffraction was performed on a transformation-induced plasticity (TRIP) steel under cyclic loading at room temperature. By Rietveld refinement and single peak analysis, the volume fraction and average stress estimates as well as dislocation density of individual phases (austenite and martensite phase) were derived. The results reveal that the volume fraction of martensite phase, instead of individual phase strengthening, should be accounted for the remarkable secondary cyclic hardening.