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Showing 1 to 6 of 6 for “"Precipitate Coarsening"”.
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Phase field model for precipitates in crystals
Oxygen precipitate caused by oxygen supersaturation is the most common and important defects in Czochralski (CZ) silicon. The presence of oxygen precipitate in silicon wafer has both harmful and beneficial effects on the microelectronic device production. Oxygen precipitates are useful for …
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The role of alloying elements on the microstructure and thermal stability of Refractory Metal High Entropy Superalloys
… Al content can induce B2 ordering. However, B2 precipitates were only observed at relatively low temperatures of ∼700˚C, raising concerns for high temperature mechanical properties. The effect of Al was seen to be more complex in Chapter 8, where additions of Al into a TaTiZr alloy with a …
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Continuum Damage Mechanics (CDM) modelling of dislocation creep in 9-12% Cr creep resistant steels
… to dislocation creep including subgrain coarsening, M₂₃C₆ precipitate coarsening and stress redistribution. The CDM model was found to require calibration in order to be applied to specific 9- 12% Cr steels which was implemented using a parameter optimisation routine. The results obtained …
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Development of Low-Cost Polycrystalline Nickel-Base Superalloys for Gas Turbine Applications
… using a quenching dilatometer. The observed precipitate coarsening was well described using classic models, and was correlated to the hardening response by comparison to the contributions from strong- and weak-pair dislocation coupling. The deformation behaviour of small-scale …
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Improving Oxidation Resistance in Polycrystalline Ni-based Superalloys for High-Temperature Applications
… compared to RR1000. C19 exhibited insignificant coarsening at 700°C but showed more coarsening at 800°C after 1000 hours. The σ phase was also detected after 800°C and 1000 hours. The results suggested that C19 was less prone to coarsening than RR1000 but more work is needed to demonstrate its …
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Elevated temperature mechanical properties of line pipe steels
… microstructure during deformation such as precipitate coarsening, dynamic precipitation, tempering of martensite in martensite-austenite islands, or transformation of retained austenite could account for differences in tensile property functionality between the X52 and X70 steels. Long term …