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SEM cross-sectional image of as-cast rods for (a) and (b) revealing the change in the morphology of the eutectic up on Sn addition. Inset: XRD patterns corresponding to the microstructures indicating a refinement and decrease in the volume fraction of the phase due to Sn addition.
TEM bright-field images of as-cast rods: (a) and (b) interrupted growth of the FeTi phase in . Insets: the SAED patterns from the zone axis.
Room temperature compressive engineering stress-strain curves of the and as-cast rods.
SEM secondary electron images of the fracture surface: (a) , showing delamination and cutting of the eutectic rods; (b) , revealing that crack path proceeds through the plate shape FeTi phase. Inset: rotation of the eutectic colonies due to interaction with the shear bands (marked by the arrow) at the specimen surface.
Room temperature compression test results for ( and 3.85): Young’s modulus , yield stress , yield strain , ultimate compression stress , and fracture strain .
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