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Showing 1 to 6 of 6 for “"precipitate free zone"”.
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Kinetics of carbide dissolution in chromium + molybdenum steels during oxidation
… 8500C to study their oxidation resistance and a precipitate-free zone formation. Alloy design was carried out using a thermodynamic software Thermo-Calc. Carbides in these alloys were expected to dissolve during oxidation, releasing chromium required for the protective oxide formation. …
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Quench rate and aging effects in aluminum-zinc-magnesium-copper aluminum alloys
… <p>The effect of quench rate on the width of precipitate free zone was examined. It was determined that at quench rates greater then 60°C/sec., vacancy depletion dominated. At slower quench rates, it was determined that solute depletion dominated the precipitate free zone. The critical vacancy …
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Understanding the mechanisms and parameters affecting the structural corrosion of sheet gauge 7xxx alloys
… which involves the formation of nanosized precipitates after a specific heat treatment sequence. However, one of the main roadblocks to the penetration of 7xxx alloys in structural applications like rockers and bumpers is concerns regarding structural forms of corrosion, such as …
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Microstructural analysis of aluminium alloy 2096 as a function of heat treatment.
… a fine, near continuous decoration of T1 precipitates and a narrow, but distinct T1 precipitate free zone (PFZ) adjacent to the boundary. The high angle boundaries of the UA4 temper either showed no grain boundary T1 precipitation, or contained a single, large T1 precipitate that grew …
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Grain Boundary Character Distribution in the HAZ of Friction Stir-Processed Al 7075 T7
The heat affected zone (HAZ) of friction stir welded Al 7075 T7 shows diminished corrosion resistance properties when compared with the parent material. Corrosion attack in this region of the weld is primarily intergranular and is associated with the presence of precipitate free zones. Current TEM …
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Micromechanical studies and modelling of toughness in high strength aluminium alloys
… the coverage of grain boundary decoration and precipitate free zone (PFZ) width<br/>increase with reduced quench rates. The failure morphology of the air cooled material<br/>appears consistent with classical intergranular ductile failure. Coarse voiding and shear<br/>decohesion was prevalent in …