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In situ study of the evolution of atomic strain of bulk metallic glass and its effects on shear band formation

DOI: 10.1016/j.scriptamat.2013.03.016 DOI Help

Authors: Y. J. Huang (University of Hull) , J. C.. Khong (University of Hull) , J. Mi (University of Hull) , Thomas Connolley (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Scripta Materialia , VOL 69 (3) , PAGES 207-–210

State: Published (Approved)
Published: March 2013
Diamond Proposal Number(s): 7665

Abstract: The tensile behavior of TiZrNiCuBe metallic glass was studied using synchrotron X-ray diffraction and scanning electron microscopy. Shear band formation was carefully controlled by the introduction of a stress gradient due to a semi-circular notch. Micro and atomic-level strains were calculated by the Q-space method and pair distribution function analysis, respectively. The atomic-pair strains for the area near the notch increase exponentially at the final deformation stage. This can be directly linked to the shear induced dilatation resulting from the shear band formation.

Journal Keywords: Metallic glasses; Synchrotron X-ray diffraction; Pair distribution function; Strain; Shear bands

Subject Areas: Materials, Physics, Engineering

Instruments: I12-JEEP: Joint Engineering, Environmental and Processing

Other Facilities: No