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Title: Frequency dependent deformation reversibility during cyclic loading

Journal Article · · Materials Research Letters
ORCiD logo [1];  [1]; ORCiD logo [2];  [3];  [4]
  1. Louisiana State Univ., Baton Rouge, LA (United States)
  2. Univ. of Nebraska, Lincoln, NE (United States)
  3. Auburn Univ., AL (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

High-frequency testing (HFT) is useful for accelerated fatigue testing of conventional materials that typically serve under low-frequency loading conditions, as well as for the assessment of the robustness of microelectromechanical systems which typically experience high-frequency service conditions. Using discrete dislocation dynamics, we attempt to elucidate the effect of loading frequency on the reversibility of cyclic deformation. We demonstrate that the HFT induces a higher fraction of reversible cyclic deformation because of a larger portion of elastic/anelastic deformation due to limited dislocation mobility, and a higher degree of reversibility in plastic deformation owing to the less occurrence of cross-slip.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
89233218CNA000001; AC52-06NA25396
OSTI ID:
1483312
Alternate ID(s):
OSTI ID: 1570657
Report Number(s):
LA-UR-19-30007
Journal Information:
Materials Research Letters, Vol. 6, Issue 7; ISSN 2166-3831
Publisher:
Taylor and FrancisCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Figures / Tables (4)