Phys. Rev. B 69, 014303 (2004) [7 pages]Thermal and radiation-enhanced diffusion in the bulk metallic glass Ni23Zr62Al15Received 21 May 2003; accepted 21 May 2003; published 29 January 2004 The temperature dependence of tracer diffusion in the three-component system NiZrAl was measured. For the composition Ni23Zr62Al15, it was possible to measure diffusion coefficients below and above the glass transition temperature. Similar to the binary metallic glass NiZr, the diffusion coefficient was strongly dependent on the atomic size of the tracer, varying by two orders of magnitude. The results are suggestive of a collective diffusion mechanism in bulk metallic glasses. Radiation-enhanced diffusion was also measured in this alloy and compared with measurements of radiation-induced viscous flow on similar alloys. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.69.014303
DOI:
10.1103/PhysRevB.69.014303
PACS:
66.30.Jt, 61.43.Dq
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.