The study of adhesion between the glass shell and the metallic nucleus of a Fe-based amorphous microwire

•Adhesion of the Fe-based amorphous microwires is 270 MPa.•The annealing of microwires leads to an increase in the adhesion.•Adhesion provides a rigid joining of the glass and metallic parts of a wire.•Adhesion affects the stress tensor under the tension of glass-coated microwires.