Science Advances

Supplementary Materials

  • The PDF file includes:
    • Fig. S1. Postfracture characterization of an Nb nanowire.
    • Fig. S2. Deformation-induced BCC-FCC-BCC phase transformation in an Nb nanowire.
    • Fig. S3. Identification of the twin plane in the Nb nanowire presented in Fig. 2.
    • Fig. S4. Surface nucleation of dislocation in an Nb nanowire.
    • Fig. S5. Formation of an atomic chain before the fracture of the Nb nanowire shown in Fig. 3.
    • Fig. S6. Multiple reorientations and superplastic deformation in an Nb nanowire.
    • Fig. S7. An additional example showing the multiple reorientations and superplastic deformation in an Nb nanowire.
    • Fig. S8. Statistical data showing the deformation modes and ductility of Nb nanowires with different diameters.
    • Table S1. Schmid factors for dislocation slip and deformation twinning under different loading directions of Nb nanowires.
    • Table S2. Activation energies of surface self-diffusion Ed on the close-packed surface of FCC and BCC metals and their corresponding N-body potentials.
    • Legends for movies S1 to S3

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  • Other Supplementary Material for this manuscript includes the following:
    • Movie S1 (.mp4 format). Deformation-induced phase transformation in an Nb nanowire with a diameter of ~15 nm.
    • Movie S2 (.mp4 format). Twinning-dominated deformation in an Nb nanowire with a diameter of ~14.7 nm.
    • Movie S3 (.mp4 format). Superplastic deformation of an Nb nanowire with a diameter of ~13.7 nm.

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