Recrystallization static

Eggleston and Bailey (1967) published a study on dioctahedral chlorite and gave five examples of chlorites having a pyrophyllite-like layer and a brucite-like sheet (designated di/trioctahedral by the authors with the trioctahedral sheet including all species of chlorite with 5 to 6 octahedral cations per formula unit and dioctahedral 4 to 5 octahedral cations per formula unit). Identification of di/trioctahedral chlorites is indirectly accomplished. Eggleston and Bailey stated that identification depends on the intermediate value of c (060), on chemical analysis of impure material, and on the ideal compositions of the recrystallization products of static heating . The composition of one such chlorite for which they refined the structure is ... 

Recently, Frydman et al. successfully analysed the Co static powder spectra of a series of cobalamins and cobaloximes measured at 4,7, 7.1 and 11.8 TP As pointed out by the authors, there were considerable changes in the Co quadrupole coupling constants depending on the crystallization conditions of the cobalamins, whereas the Co chemical shift tensors remained fairly constant. It was suggested that the different behaviour of the EFG and chemical shift tensors is due to a different dependence of these tensors on an uncharacterized structural rearrangement when the cobalamins were recrystallized. Furthermore, the close resemblance between the Co NMR data of cobalamins and cobaloximes illustrates that cobaloximes are much better model compounds of cobalamins than cobaltoporphyrins. In a study of polyammonium cobalticyanide supercomplexes, Zhou et al. combined the use... 

Refinement of the grain size in the stir zone of the welds produced here occurred as a result of some restorative process. The restoration processes include recovery or recrystallization, and they may occur either statically (during heating after cold deformation), dynamically (during hot deformation), or metadynamically... 

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... 

As a result of this process, a joint is produced in solid state. Because of various geometrical features of the tool, the material movement around the pin can be quite complex. During FSW process, the material undergoes intense plastic deformation at elevated temperature, resulting in generation of line and equiaxed recrystallized grains. The fine microstructure in friction-stir welds produces good mechanical properties of the joints, both static and dynamic. 

Static Mechanical Properties Properties at Low Temperatures and Low Strain Rates. The flow stress of the transition metals Mo, W, Nb, and Ta is strongly dependent on temperature and a strain rate below a characteristic transition temperature 7k (corresponding to 0.1 to 0.2 of the absolute melting temperature) and plastic strain rates below lxl0 s [1.165]. As an example, experimental data on the temperature dependence of the flow stress of recrystallized Ta are shown in Fig. 3.1-157. This dependence has... 

The change in properties extends beyond the static properties of the material. Under dynamic loading, the material behaves much more elastically and the tendency to destruction by hysteresis induced heating effects is reduced. On the other hand, because the polymer chains are stretched severely in the stress transfer process, there are much higher levels of bond breakage and recrystallization effects with typical fatigue failure performance. In the balance, the net result is a substantial improvement in the performance of the material in dynamic loading. 

Yoshie, A., et al. (1987). Formulation of Static Recrystallization of Austenite in Hot Rolling Process of Steel Plate. Transactions of the Iron and Steel Institute of Japan, 27(6), 425 31. 

In any study in the area of natural products chemistry, isolation and purification are the mandatory first steps that one encounters and must accomplish. Unfortunately, however, this phase is often handled too casually and without the realization that success or failure of a project is often solely determined by this step. Perhaps this attitude reflects the days when we were dealing with much larger quantities of static compounds that could be isolated readily by extraction with organic solvents and recrystallization. Or perhaps it is because most chemists, excepting professional isolation chemists or chromatographers, regard purification as a trial and error art that lacks logic or innovation. 

Beta forging working histories for Beta III require imparting enough hot work to reach final macrostructme and microstructure objectives. (3enei ally, reductions in any given forging process are 30 to 50% to achieve desired dynamic and static recrystallization. Very low levels of P reduc-... 

The weight gain (oxide thickness) peaked at a density of 20 kg/m (8 MPa) (Fig. 4.7) for four alloys exposed to SCW for 1000 h at 625°C at 8 and 29 MPa (static autoclave) and at 0.1 MPa (flowing steam in a tube furnace). 310 SS formed a Cr-rich oxide layer with the spinel stmcture, with an underlying recrystallized y layer depleted in Cr (Fig. 4.8 Table 4.2). The spinel-structure oxide had essentially the same lattice parameters at each pressure the inner oxides had roughly similar compositions (Table 4.2), while the outer oxide compositions showed a pressure (density) dependence. 

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