Anisotropic plastic deformation by viscous flow in ion tracks

Physical Review B - Condensed Matter and Materials Physics

Volumn 71, Issue 2, 2005, Pages

  Van Dillen, T ^a   Polman, A ^a   Onck, P R ^b   Van Der Giessen, E ^b  

^a FOM INSTITUTE AMOLF   (Netherlands)

^b UNIVERSITY OF GRONINGEN   (Netherlands)

Author keywords

[No Author keywords available]

Indexed keywords

ION; PLASTIC;

ANISOTROPY; ARTICLE; MODEL; PARAMETER; SHEAR STRESS; STRESS STRAIN RELATIONSHIP; THEORY; THERMODYNAMICS; VISCOELASTICITY; VISCOSITY;

EID: 16844368719     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.71.024103     Document Type: Article

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21. 0 (see Sec. V). It is therefore reasonable to assume a constant temperature distribution in the ion track to estimate the local (viscous) deformations. The actual local track temperature T(r;t) should in this case be integrated over space and time to yield the average, "uniform" temperature in the ion track determining the local viscous deformation (see Sec. VI and Appendix B).
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24. 2 at 293 K. Consequently, we assume the elastic moduli to be temperature independent, so that the same moduli can be used inside and outside the ion track.
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33. This is not the case for the example plotted in Fig. 3(d), as can be seen from the associated in-plane viscous strain plotted in Fig. 3(c) (dotted line).
34. Independent ion tracks are ion tracks that do not overlap and do not "feel" each other's stress field.
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37. The value of the average depends on how the average is taken. Our result is slightly different from the one found by Trinkaus and Ryazanov (Ref. 11).
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