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Influence of minor Si addition on the glass-forming ability and mechanical properties of Pd40Ni40P20 alloy

✍ Scribed by N. Chen; D.V. Louzguine-Luzgin; G.Q. Xie; T. Wada; A. Inoue

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 551 KB
Volume: 57
Category: Article
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2009.02.028

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✦ Synopsis

The influence of a minor Si addition on the glass-forming ability and mechanical properties of Pd 40 Ni 40 P 20 alloy was investigated. It is suggested that the minor Si addition can adjust the composition to be closer to eutectic, which favors a large undercooling. Furthermore, Si addition led to an enhancement in the ductility of Pd-Ni-P bulk metallic glasses. Simultaneously it is of great interest that there are nanoscale and microscale wavy steps observed on the fracture surface of Pd 40 Ni 40 Si 4 P 16 metallic glass. It is suggested that a quickly running crack dissipates excess energy in terms of stress wave, leaving such wavy traces on the fracture surface of the deformed Pd-based metallic glass.

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