Twinning of deformation-induced ε-martensite in Fe-30Mn-6Si shape memory alloy
Source abstract
Abstract
Abstract The e-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 e 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. e 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 e-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} e 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.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microstructure and Mechanical Properties of Steels · Shape Memory Alloy Transformations · Titanium Alloys Microstructure and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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