Recrystallization dynamic

The differential stress also correlates with the subgrain size d and with the size D of the grains generated by dynamic recrystallization. The empirical relations... 

Thus, because of these empirical correlations, it may be possible, at least in principle, to estimate quantitatively the stress, temperature, and perhaps the strain-rate of a naturally deformed rock from measurements of dislocation density, subgrain size, and dynamically recrystallized grain size, together with Burgers vector determinations. However, these estimates will be questionable unless certain conditions are fulfilled. Some of the more important of these conditions will now be discussed before considering specific examples of the application of microstructural observations to tectonic problems. 

Rutter E. H. (1995) Experimental study of the influence of stress, temperature, and strain on the dynamic recrystallization of Carrara marble. J. Geophys. Res. 100, 24651-24663. 

A more direct approach to dating deformational features involves the application of isotopic geochronology to minerals that grew initially or were dynamically recrystallized during deformation at temperatures below their nominal closure temperatures (Reuter and Dallmeyer, 1989 Gromet, 1991 West and Lux, 1993 Coleman and Hodges, 1995 Resor et al., 1996 Dunlap, 1997 Anderson et al., 2001 Dallmeyer... 

DYNAMIC RECRYSTALLIZATION OF LOW STACKING FAULT ENERGY METALS... 

Abstract Dynamic recrystallization mechanisms in an austenitic stainless steel and a... 

Dynamic recrystallization of low stacking fault energy metals... 

Carter, K. E., Dworkin, S. I. 1990. Channelized fluid flow through shear zones during fluid enhanced dynamic recrystallization. Geology, Geological Society of America, 18, 720-723. 

DRZ, dynamic recrystallization zone HAZ, heat-affected zone... 

Fig. 5.42 Microhardness data for actively cooled (AC) and heated (AH) conditions for friction stir welded 2195-T8 Al. HAZ, heat-affected zone TMAZ, thermomechanically affected zone DXZ, dynamically recrystallized zone. Source Ref 75...

Dynamic recrystallization has been cited as the predominant mechanism of microstruc-... 

Five distinct metal flow zones (Figure 13.8) have been identified within the transverse section of the FSW nugget dynamically recrystallized zone. Zones I and II represent the advancing and retreating side extrusion zones. 

Figure 7.14 Creep deformation map for polycrystalline alumina (grain size, 100 tm). Shaded region represents dynamic recrystallization. (Adapted from Frost and Ashby, 1982, reproduced courtesy of H. J. Frost, Dartmouth College, NH.)...

Micro-structural models describe the in-process and post-deformation aspects of material response in terms of microstructure parameters. The models are based on dynamic and static phenomena, both of which are caused by deformation (Meyer et al. 2005). Dynamic phenomena arise at the beginning of the deformation process and may continue throughout. They include hardening, dynamic recovery, and dynamic recrystallization. Dynamic phenomena leave the material in an unstable state that promotes the start of static phenomena and, in particular, static and meta-dynamic recovery and recrystallization, which are then followed by grain growth. Methods that are widely applied for high strain... 

Sokolov et al. (1969a) at about 175 K indicate their material was relatively brittle at this temperature. A rather rapid rise of ductility in tension (Sokolov et al., 1969a) and compression (Sokolov et al., 1970a) near 700 to 800 K is probably associated with recrystallization during testing since this should be the appropriate temperature range for dynamic recrystallization. It seems rather evident that none of the data shown in fig. 8.11 reveals the intrinsic mechanical properties of pure scandium. 

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