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Showing 1 to 9 of 9 for “"Cold working"”.
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Cold Working Holes in Multi-Layer Members
… resistance of fasteners holes is the process of cold expansion. This method introduces a compressive stress field in the region around the hole that slows the propagation of cracks. Determining the life cycle benefits gained from cold expansion is difficult due to the complex nature of the …
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An investigation of the effects of cold working upon copper
… of the change of properties resulting from the cold working of a metal has assumed important proportions. For stresses below the elastic limit, Hooke's law and Poisson's ratio are applicable, but above the elastic limit relation to stress to strain follows a different law. Copper and steel are …
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Microstructure and precipitation effects in inconel alloy 600.
… titanium and aluminium contents, grain size and cold working, with precipitation reactions which occur during heat treatments similar to those experienced as a consequence of commercial PWR Steam Generator (SG) tube processing. In order to carry out this investigation commercial material was …
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Abrasion-corrosion and stress corrosion resistance of a 9Cr-2Ni-0.7Mo steel in simulated mine water
… variables of plate thickness and prior cold working were found to exert negligible influence on corrosion-abrasion resistance. This is ascribed to the small influence of these processes on the hardness and associated mechanical properties due the inherent low work hardening ability of …
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Modeling Dissolution in Aluminum Alloys
… such as strength are altered significantly with cold working, annealing, precipitation-hardening, and/or heat-treatments. Heat-treatable aluminum alloys contain one or more soluble constituents such as copper, lithium, magnesium, silicon and zinc that individually, or with other elements, can …
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Characterization and science of an aluminum fuel treatment process
… process proved to be critically enhanced by cold working the aluminum allowing more favorable conditions for liquid metal to diffuse into the grain boundaries. Activating bulk aluminum was previously thought to be impractical and current approaches to using aluminum as a fuel shifted towards …
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Technological, social and economic aspects of gold production and use by the iron age people of Southern Africa
… of the gold artefacts studied here. No tools for working gold have been found, and inferences have been made by modelling them on tools for copper and iron working. The basic toolkit consisted of a blade, hammer, chisel, a punch and an anvil. There were four basic artefact types; wire, beads, foil …
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Fatigue Enhancement of Undersized, Drilled Crack-Stop Holes
… to initiate and propagate. Static mechanical coldworking generated a great deal of interest in the 1970s and was among several processes that were investigated for improving fatigue life of fastener holes. Extensive literature exists showing that static coldworking of fastener holes can …