Plastic deformation of quartz at room temperature: A Vickers nano-indentation test

Details Plastic deformation of quartz at room temperature: A Vickers nano-indentation test Plastic deformation of quartz at room temperature: A Vickers nano-indentation test

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.2773m&link_type=abstract

Geophysical Research Letters, Volume 27, Issue 17, p. 2773-2776

Physics

5

Physical Properties Of Rocks: Plasticity, Diffusion, And Creep

Scientific paper

Vickers indentation tests of natural quartz were performed with a load of 98 mN at room temperature and one atmosphere. Atomic force microscopy revealed no evidence of fracturing during indentation. Transmission electron microscope observations indicate that no dislocations were generated during the indentation tests. However, high resolution electron microscopy revealed that sharp creases of crystal lattices had developed. These observations lead to the conclusion that quartz deformed plastically even at room temperature. The plastic strain was accommodated by the mechanism of lattice creasing, which is described here for the first time.

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