Abstract
The ε-martensite, which is induced by tensile plastic deformation, twins under further plastic deformation due to the collision of different habit plane variants. Crystallographic characteristics of the mechanical ε twins were examined in this study by electron backscattering diffraction in a Fe-30Mn-6Si shape memory alloy, which was subjected to tensile deformation of up to 10% at room temperature. ε twins of {1 0 1¯ 2} and {1 0 1¯ 1} types were observed at the intersections of two different habit plane variants. Non-basal shearing forces on the pre-existing ε-martensite in the directions perpendicular to or 30°-inclined from the intersection axis (Type I and II) are responsible for the {1 0 1¯ 2} and {1 0 1¯ 1} ε twins, respectively. The former twins at Type I intersections exhibited a self-accommodating microstructure consisted of different twinning-plane variants. The occurrence of the {1 0 1¯ 1} twinning at Type II intersections suggests an inclined twinning shear mechanism.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
