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Twinning in face-centered cubic materials has received increasing attention owing to its favorable contributions to materials properties. While the models designed to account for twin nucleation have been mainly concerned with deformation twinning under external stress, addressing autocatalytic nucleation of twin (self-twinning) remains a challenge. Here, we report experimental evidences and a dislocation-based...
Strain-induced martensitic transformation in an austenitic 18Cr–10Mn–0.4N steel was investigated using neutron diffraction and transmission electron microscopy (TEM). Based on experimental evidence from neutron diffraction and TEM indicating that a sequential γ→ε→α′ transformation occurred and the ε intersection played a definite role in the α′ formation, an intersecting-shear model for the strain-induced...
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