☆ 4.7 Article

Effects of Cu ion irradiation in Cu50Zr45Ti5 metallic glass

SCRIPTA MATERIALIA (2009)

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期刊

SCRIPTA MATERIALIA
卷 61, 期 3, 页码 265-268

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2009.03.060

关键词

Metallic glass; Ion irradiation; Crystallization

类别

Nanoscience & Nanotechnology Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering

资金

  1. Siemens Power Generation Emerging Technologies
  2. NRC Early Career Development
  3. DOE [DE-FC07-05ID14657, DE-FG02-05ER46208]
  4. State of Texas through the Texas Center for Superconductivity at the University of Houston

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We studied the role of thermal spike in nanocrystallization of Cu50Zr45Ti5 metallic glasses after 1 MeV Cu ion irradiation at room temperature. Nanocrystals of Cu10Zr7 and CuZr2 phases are formed after the ion irradiation. The study suggests that thermal spike formation and subsequent quenching are too fast to allow direct structural transformation in the damage cascade regions. The overall irradiation effects are caused by enhanced atomic mobility due to increased excessive free volume. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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