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Showing 1 to 20 of 81 for “"Recrystallisation"”.
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Recrystallisation Of Strontium Titanate
The recrystallisation rate of amorphous strontium titanate is dramatically enhanced by thermal annealing in water vapour as compared with a dry ambient. Time resolved optical reflectivity (TRR) has been combined with Rutherford backscattering spectrometry (RBS) and ion channelling to investigate …
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Recrystallisation in Single Crystal Nickel-Based Superalloys
… solution heat treatment of the alloy causes recrystallisation. Crack nucleation and propagation is preferred at the recrystallisation grain boundaries, and this significantly reduces the creep and fatigue properties of the alloy. The as-cast microstructure (Chapter 3) is characteristic of …
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The cold rolling and primary recrystallisation textures of austenitic stainless steels.
… literature on the cold rolling and primary recrystallisation textures of f.c.c. and b.c.c. metals and alloys, with later reference to recent work on stainless steels. Using laboratory and commercial alloys a study has been made of factors influencing the cold rolling and primary …
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Grain refinement in cast titanium 6-aluminium 4-vanadium by hydrogenation, deformation and recrystallisation
Wrought Ti6Al4V has attractive mechanical properties but its usage is limited to highend aerospace applications because it is costly to machine components from wrought stock. Investment casting is an alternative component manufacturing route but cast components have inferior mechanical properties …
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Investigation of rolling variables on the structure of steel.
… suitably high strains, dynamic and metadynamic recrystallisation. Only a small amount of static recovery precedes static recrystallisation. Nucleation for recrystallisation occurs at preferential sites, particularly serrated boundaries and triple junctions of the deformed prior gamma-grains.The …
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Hot formability and microstructural development of spray-deposited Al-Li alloy and composite.
… solution temperature of 530°C to investigate the recrystallisation kinetics and microstructures produced, with particular emphasis on the effect of the inclusion of reinforcement particles on the behaviour of the matrix alloy. Hyperbolic sine forms of constitutive equation have been produced and …
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Influence of composition and thermomechanical processing on microstructure evolution in AISI 430 ferritic stainless steel(FSS)
… as-hot-rolled microstructure and only partial recrystallisation after annealing. A high austenite potential encouraged the ferrite phase to undergo extensive continuous recrystallisation during hot band annealing. However, the affinity for the precipitation of carbo-nitrides tended to play a …
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Correlation between homogenisation parameters and property evolution of AA3104 CBS after hot finish rolling
… refinement, which then has a marked effect on recrystallisation behaviour and texture development. The findings show that the 600°C/520°C condition resulted in coarse dispersoids (127 nm) with low number density (8.93 particles/µm²), the 560°C/520°C condition produced intermediate sized …
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Evaluation of the stress ralaxation technique for measuring softening kinetics in aluminium alloys
… TMP and often arises as a result of inadequate recrystallisation. To avoid the deleterious effects, it is important to implement the appropriate rolling conditions in order to control the processes of recovery and recrystallisation. The means by which the correct rolling conditions can be …
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Manipulation of carrier particles for inhalation
… the effect of altering the conditions of recrystallisation for selected sugars and sugar derivatives (lactose, trehalose dihydrate and trehalose octa-acetate (TOAc» in order to assess the physical effect on the material surface. In addition to recrystallised materials, amorphous materials …
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Hot forging of the nickel-base superalloy ATI 718Plus
… for studying the microstructural changes due to recrystallisation and deformation occurring during forging. The body of work includes the testing and characterisation of 718Plus with and without $\eta$. High temperature compression tests were performed in the temperature range of 850 to 1025ºC, …
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Control of texture and formability in ferritic stainless steels.
… possible nucleation mechanisms for the observed recrystallisation textures. Cold rolling texture development and tensile strain ratios have been discussed from theoretical considerations of slip in bcc metals.Pronounced differences in microstructural features between high interstitial 4-30 and …
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Physical analysis of solid solution formulations
… other PEG used and to reduce the enthalpy of CBZ recrystallisation which indicates that less crystals been formed. The higher the PEG concentration in the formulation, the more stable the CBZ amorphous form. The best performing formulations in terms of controlling the recrystallisation of the CBZ …
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GEOCHEMISTRY AND PETROGRAPHY OF SPELEOTHEMS FROM TURKEY AND IRAN: PALAEOCLIMATE AND DIAGENESIS
… surface conditions, and is therefore prone to recrystallisation as calcite if it comes into contact with a fluid that is undersaturated with respect to aragonite. This process affected two speleothems from Dim Cave, SW Turkey, and one speleothem from Torang Cave, Iran. The older Dim Cave …
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The influence of microstructure on electrical resistivity in palladium alloys
… containing more than 6 at.% solute, recovery and recrystallisation processes are accompanied by an increase in resistivity and a decrease in microhardness; after recrystallisation is complete, further annealing bas no significant effect on either property. In alloys containing less than 6 at.% …
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Some problems in hot rolling of al-alloys solved by the finite element method
… the evolution of substructure, modelling static recrystallisation and designing the rolling pass schedule. A practical pass schedule supplied by an aluminium company and containing reliable measured data of roll load and torque is analysed by a commercial 3-D thermornechanical coupled FEM program …
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