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Title: Strength and texture of Pt compressed to 63 GPa

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4907866· OSTI ID:1229367
 [1];  [2];  [3]
  1. Ecole Polytechnique Fédérale de Lausanne (Switzerland)
  2. Univ. of Western Ontario, London, ON (Canada)
  3. Princeton Univ., NJ (United States)

Angle- and energy-dispersive X-ray diffraction experiments in a radial geometry were performed in the diamond anvil cell on polycrystalline platinum samples at pressures up to 63 GPa. Observed yield strength and texture depend on grain size. For samples with 70–300-nm particle size, the yield strength is 5–6 GPa at ~60 GPa. Coarse-grained (~2-μm particles) Pt has a much lower yield strength of 1–1.5 GPa at ~60 GPa. Face-centered cubic metals Pt and Au have lower strength to shear modulus ratio than body-centered cubic or hexagonal close-packed metals. While a 300-nm particle sample exhibits the < 110 > texture expected of face-centered-cubic metals under compression, smaller and larger particles show a weak mixed < 110 > and < 100 > texture under compression. Finally, differences in texture development may also occur due to deviations from uniaxial stress under compression in the diamond anvil cell.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704; EAR 10-43050; AC02-98CH10886
OSTI ID:
1229367
Alternate ID(s):
OSTI ID: 1228533
Report Number(s):
BNL-111443-2015-JA; JAPIAU
Journal Information:
Journal of Applied Physics, Vol. 117, Issue 6; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

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