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Yasuda, H.Y.; Yamaoka, K.; Oda, Y.; Umakoshi, Y.
Scripta materialia, 10/2008, Letnik: 59, Številka: 7Journal Article
Tension–compression asymmetry of pseudoelasticity in Fe–23.0at.%Al single crystals with the D0 3 structure was quantitatively examined by analyzing stress–strain response during tension–compression loading. The crystals demonstrated large pseudoelasticity associated with to-and-fro motion of 1/4〈1 1 1〉 superpartial dislocations dragging antiphase boundaries. Pseudoelasticity based on {1 0 1} slip showed little tension–compression asymmetry while an activation of {2 1 1} slip resulted in the asymmetry depending on the moving direction of 1/4〈1 1 1〉 superpartials with a screw character during loading and unloading.
