Magnetic domains induced by shear bands in metallic glasses

  • Lakshmanan V
  • Li J
  • Tsai C
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Abstract

Magnetic domain structures in the vicinity of shear bands produced by bending of Fe78B13Si9(Allied 2605-S2) and Co80B20(3M Corp.) metallic glasses have been investigated by the Interference Colloid Contrast technique. The domain structures on the tensile and compressive sides of bending are different. The tensile side of the positive magnetostriction (λ) metallic glass and the compressive side of the negative λ material have similar oblique or off-axis anisotropies. Conversely, the compressive side of the positive λ material and the tensile side of the negative λ material indicate in-plane anisotropies. Dislocation wall models of the shear displacements along the shear bands shose stress fields are consistent with the domain structures, need different arrangements of dislocations for the shear bands formed in a tensile state of stress from that formed in a compressive state of stress. © 1990.

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Authors

  • V. Lakshmanan

  • J. C.M. Li

  • C. L. Tsai

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