Abstract
An improved tension-fatigue limit of 473 MPa is gained for Zr58.5Ti14.3Nb5.2Cu6.1Ni4.9Be11.0 bulk-metallic-glass-matrix composites (BMGMCs). High volume-fraction dendrites within the glass matrix induce increased effectiveness on the blunting and propagating resistance of the fatigue-crack tip. Each fine striation is created during one stress cycle on the basis of analysis of experiments and calculations. A distinguishingly decreased crack-growth rate for the BMGMCs, compared to the monolithic BMGs, prevails, due to the plastic deformation of the dendrites, evidenced by the synchrotron X-ray results.
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