Metallurgical and Materials Transactions A

, Volume 43, Issue 8, pp 2676–2679 | Cite as

The Effects of Fatigue on the Atomic Structure with Cyclic Loading in Zr50Cu40Al10 and Zr60Cu30Al10 Glasses

  • Peng Tong
  • Despina Louca
  • G. Wang
  • P. K. Liaw
  • E. Maxey
  • Y. Yokoyama
Symposium: Bulk Metallic Glasses VIII

Abstract

The potential damage effect from fatigue on Zr bulk metallic glass alloys of Zr50Cu40Al10 at the eutectic point and Zr60Cu30Al10 away from the eutectic point (in atomic percent) is examined via the local atomic structure, which was obtained from the pair density function analysis of the synchrotron X-ray radiation and neutron data. Samples cut from the same rods were subjected to 104, 105, and 106 compression cycles ex situ, and the evidence for fatigue damage was investigated by comparing alloys before and after cyclic loading. Bond orientation was observed particularly in Zr50Cu40Al10, suggesting that fatigue damage occurs even in the elastic range, below the yield point, and during cyclic loading. The initiation of fatigue changes is observed first within small localized atomic regions.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2011

Authors and Affiliations

  • Peng Tong
    • 1
  • Despina Louca
    • 1
  • G. Wang
    • 2
  • P. K. Liaw
    • 2
  • E. Maxey
    • 3
  • Y. Yokoyama
    • 4
  1. 1.Department of PhysicsUniversity of VirginiaCharlottesvilleUSA
  2. 2.Department of Materials Science and EngineeringUniversity of TennesseeKnoxvilleUSA
  3. 3.Argonne National LaboratoryArgonneUSA
  4. 4.Institute for Materials ResearchTohoku UniversitySendaiJapan

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