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Nanoscale Periodic Corrugation to Dimple Transition due to "Beat" in a Bulk Metallic Glass
We report an intriguing observation that the interaction of brittle nanoscale periodic corrugations (NPCs) can lead to the formation of ductile dimples on the dynamic fracture surface of a tough Vit 1 bulk metallic glass (BMG) under high-velocity plate impact. A "beat" phenomenon due to superposition of simple harmonic vibrations, approximately characterizing NPCs, is proposed to explain this unusual brittle-to-ductile transition. The present results agree well with our previously revealed energy dissipation mechanism in the fracture of BMGs.
This paper was published as:
Jiang MQ, Ling Z, Meng JX, Gao JB, Dai LH. Nanoscale Periodic Corrugation to Dimple Transition due to "Beat" in a Bulk Metallic Glass. SCRIPTA MATERIALIA, 62(8):572-575(2010)