Tensile behavior of nanocrystalline copper
- Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
High density nanocrystalline copper produced by inert gas condensation was tested in tension. Displacements were measured using foil strain gauges, which greatly improved the accuracy of the strain data. The Young`s modulus of nanocrystalline copper was found to be consistent with that of coarse-grained copper. Total elongations of {approx} 1% were observed in samples with grain sizes less than 50 nm, while a sample with a grain size of 110 nm exhibited more than 10% elongation, perhaps signifying a change to a dislocation-based deformation mechanism in the larger-grained material. In addition, tensile tests were performed as a function of strain rate, with a possible trend of decreased strength and increased elongation as the strain rate was decreased.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-86ER45229; W-31109-ENG-38
- OSTI ID:
- 201763
- Report Number(s):
- ANL/MSD/CP-86112; CONF-951026-10; ON: DE96005217; TRN: AHC29606%%77
- Resource Relation:
- Conference: Materials Week `95, Cleveland, OH (United States), 29 Oct - 2 Nov 1995; Other Information: PBD: Nov 1995
- Country of Publication:
- United States
- Language:
- English
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