Grain growth and loss of texture during annealing of alloys, and the translation of Earths inner core

Geophysical Research Letters

Volumn 37, Issue 22, 2010, Pages

  Bergman, Michael I ^a   Lewis, Daniel J ^b   Myint, Ingyin Hla ^a   Slivka, Liam ^a,c   Karato, Shun Ichiro ^c   Abreu, Andrew ^b  

^a Physics Department Bard College at Simons Rock ^*  (United States)

^b RENSSELAER POLYTECHNIC INSTITUTE   (United States)

^c YALE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ANISOTROPY; ANNEALING; COREMAKING; GRAIN SIZE AND SHAPE; SOLIDIFICATION; TEXTURES; WAVE PROPAGATION;

DIRECTIONAL SOLIDIFICATION; DIRECTIONALLY SOLIDIFIED ALLOY; ELASTIC ANISOTROPY; HIGH ENERGY; INNER CORE; INTERPHASE BOUNDARIES; MINOR ELEMENTS; P-WAVE VELOCITY; PHYSICAL MECHANISM; PRIMARY PHASE; ROTATION AXIS;

GRAIN GROWTH;

ALLOY; ANNEALING; INNER CORE; P-WAVE; SEISMIC ANISOTROPY; SOLIDIFICATION; WAVE VELOCITY;

EID: 78649663964     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2010GL045103     Document Type: Article

References (20)

1. Alboussiere, T., R. Deguen, and M. Melzani (2010), Melting-induced stratification above the Earth's inner core due to convective translation, Nature, 466, 744-747, doi:10.1038/nature09257.
2. Aubert, J., H. Amit, G. Hulot, and P. Olson (2008), Thermo-chemical flows couple Earth's inner core growth to mantle heterogeneity, Nature, 454, 758-761, doi:10.1038/nature07109.
3. Bergman, M. I. (1997), Measurements of elastic anisotropy due to solidification texturing and the implications for the Earth's inner core, Nature, 389, 60-63, doi:10.1038/37962. (Pubitemid 27387689)
4. Bergman, M. I. (1998), Estimates of the Earth's inner core grain size, Geophys. Res. Lett, 25, 1593-1596, doi:10.1029/98GL01239.
5. Bergman, M. I., M. Macleod-Silberstein, M. Haskel, B. Chandler, and N. Akpan (2005), A laboratory model for solidification of Earth's core, Phys. Earth Planet. Inter., 153, 150-164, doi:10.1016/j.pepi.2005.03.016. (Pubitemid 41722871)
6. Burke, J. E., and D. Turnbull (1952), Recrystallization and grain growth, Prog. Met. Phys., 3, 220-292, doi:10.1016/0502-8205(52)90009-9.
7. Cao, A., and B. Romanowicz (2004), Hemispherical transition of seismic attenuation at the top of the Earth's inner core, Earth Planet. Sci. Lett, 228, 243-253, doi:10.1016/j.epsl.2004.09.032. (Pubitemid 39660470)
8. Chandrasekhar, S. (1961), Hydrodynamic and Hydromagnetic Stability, Dover, N. Y.
9. Dubrovinsky, L., et al. (2007), Body-centered cubic iron-nickel alloy in Earth's core, Science, 316, 1880-1883, doi:10.1126/science.1142105. (Pubitemid 47025783)
10. Fearn, D. R., D. E. Loper, and P. H. Roberts (1981), Structure of the Earth's inner core, Nature, 292, 232-233, doi:10.1038/292232a0.
11. Humphreys, F. J., and M. Hatherly (1996), Recrystallization and Related Annealing Phenomena, Pergamon, Tarrytown, N. Y.
12. Jephcoat, A., and P. Olson (1987), Is the inner core of the Earth pure iron?, Nature, 325, 332-335, doi:10.1038/325332a0.
13. Marsh, S. P., and M. E. Glicksman (1996), Overview of geometric effects on coarsening of mushy zones, Metall. Mater. Trans. A, 27, 557-567.
14. Martin, J. W., R. D. Doherty, and B. Cantor (1997), Stability ofMicrostructure in Metallic Systems, 2nd ed., doi:10.1017/CBO9780511623134, Cambridge Univ. Press, Cambridge, U. K.
15. Monnereau, M., M. Calvet, L. Margerin, and A. Souriau (2010), Lopsided growth of Earth's inner core, Science, 328, 1014-1017, doi:10.1126/ science.1186212.
16. Niu, F., and L. Wen (2001), Hemispherical variations in seismic velocity at the top of the Earth's inner core, Nature, 410, 1081-1084, doi:10.1038/ 35074073. (Pubitemid 32391036)
17. Sherman, D. M. (1995), Stability of possible Fe-FeS and Fe-FeO alloy phases at high pressure and the composition of the Earth's core, Earth Planet. Sci. Lett, 132, 87-98, doi:10.1016/0012-821X(95)00057-J.
18. Tanaka, S., and H. Hamaguchi (1997), Degree one heterogeneity and hemispherical variation of anisotropy in the inner core from PKP(BC)-PKP(DF) times, J. Geophys. Res., 102, 2925-2938, doi:10.1029/ 96JB03187.
19. Vocadlo, L. (2007), Ab initio calculations of the elasticity of iron and iron alloys at inner core conditions: evidence for a partially molten inner core?, Earth Planet. Sci. Lett., 254, 227-232, doi:10.1016/j. epsl.2006.09.046.
20. Vocadlo, L., D. Alfe, M. J. Gillan, I. G. Wood, J. P. Brodholt, and G. D. Price (2003), Possible thermal and chemical stabilization of body-centered-cubic iron in the Earth's core, Nature, 424, 536-539, doi:10.1038/nature01829. (Pubitemid 36975772)