Topic
Spray forming
About: Spray forming is a research topic. Over the lifetime, 1153 publications have been published within this topic receiving 12869 citations. The topic is also known as: spray casting & spray deposition.
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TL;DR: In this article, an experimental investigation was performed to study the heat transfer process from the surface of a billet due to an oblique impinging circular gas jet, where the gas stream was generated by a circular array of 24 single jets within an atomizer nozzle.
23 citations
TL;DR: In this article, the microstructure and hardness of a spray-formed chromium-containing tool steel H13 were studied and the microstructures and hardness were rationalized on the basis of numerical analysis.
23 citations
TL;DR: In this article, the authors demonstrate that it is possible to fabricate a large volume of this composite directly from the liquid phase by spray forming an Al85Cu6Fe3Cr6 (%at) alloy.
23 citations
TL;DR: In this paper, the physical properties of alloys at high temperatures are analyzed for casting, welding, secondary refining, dip melting, spray forming, and metal powder production, and the results obtained for the properties of commercial alloys for the liquid and "mushy" states are discussed.
Abstract: Data on the physical properties of alloys at high temperatures are urgently needed for the mathematical modeling of high-temperature processes such as casting, welding, secondary refining, dip melting, spray forming, and metal powder production. Data are required for those properties which are involved in heat and fluid flow in high-temperature processes. Levitated drop methods have been adopted to measure the surface tensions, densities, and enthalpies of commercial alloys, and rapid, transient methods have been developed to measure thermal conductivities to avoid the problem of convection. The results obtained for the properties of commercial alloys for the liquid and “mushy” states are discussed.
22 citations
TL;DR: In this paper, spray-forming is a possible manufacturing route for the fabrication of Ti alloy fiber-reinforced metal-matrix composites (MMCs) because high rates of alloy-droplet cooling on impact with the fibres prevent excessive fibre-matrices reaction.
Abstract: SUMMARY
Spray-forming is a possible manufacturing route for the fabrication of Ti alloy fibre-reinforced metal-matrix composites (MMCs) because high rates of alloy-droplet cooling on impact with the fibres prevent excessive fibre-matrix reaction. Ti–6Al–4V matrix MMC monotapes containing TiB2-coated SiC fibres have been manufactured by electric-arc spray-forming, and the key MMC microstructural characteristics in the as-sprayed monotapes have been investigated by optical and scanning electron microscopy. Fibre infiltration increases with decreasing spraying distance, decreasing atomizing gas pressure and increasing arc current, because of higher temperatures in the Ti alloy spray droplets on impact with the fibres. Too much binder in the fibre preform leads to poor fibre–matrix contact, while removing the binder leads to the fibres becoming misaligned during spraying.
22 citations