Physics
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pepi...40..201w&link_type=abstract
Physics of the Earth and Planetary Interiors, Volume 40, Issue 3, p. 201-207.
Physics
9
Scientific paper
The results of large strain deformation studies of polycrystalline magnesium are reported. Shear zones develop at temperatures below 0.65 Tm for strain rates between 10-4-10-5 s-1. The zones are characterised by small recrystallised grains and are analogues of mylonite zones in crustal and mantle rocks. Their development is marked by a stress drop but the recrystallised grains in the zones do not re-equilibrate and remain equilibrated to the peak stress. However, the recrystallised grains in the areas bordering the shear zones undergo a strain dependent coarsening and their sizes re-equilibrate to the relaxed stresses at natural strains of 1. The geological implications of these results are discussed.
Drury Martyn R.
Humphreys F. J.
Ion S. E.
White Henry S.
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