rheocasting

rheocasting

[′rē·ō‚kast·iŋ]
(metallurgy)
A process in which a liquid metal is vigorously agitated during initial stages of solidification to produce a globular semisolid structure which remains highly fluid when more than 60% solidification has occurred.
References in periodicals archive ?
Microstructure and Mechanical Properties of MWCNTs Reinforced A356 Aluminum Alloys Cast Nanocomposites Fabricated by Using a Combination of Rheocasting and Squeeze Casting Techniques.
Vives, "Elaboration of semisolid alloys by means of new electromagnetic rheocasting processes," Metallurgical Transactions B, vol.
Those records cover 3D printing, deposition methods, photopolymerization, powder bed, and sheet lamination, as well as thixocasting and rheocasting.
Specific examples include the invention of a one-step rheocasting process for semisolid processing and a new loop heat pipe system for space applications.
The rheocasting process typically involves the rapid cooling of an alloy and applied convection (stirring) to create non-dendritic semi-solid slurries for casting a wide selection of alloys.
Metal matrix composites have been manufactured by various techniques such as powder metallurgy, spray deposition and several casting methods such as rheocasting, squeeze-casting, stir-casting and compo-casting, but there exist some challenges in manufacturing the discontinuously reinforced metal matrix composites.
However, an alternative cliecasting process--semi solid rheocasting (SSR), developed by the Idra Group SRL, Travagliato, Italy, and based on a Massachusetts Institute of Technology patent--has been effective in improving metallurgic casting quality without increasing costs.
The contributions range from the development of novel alloys to the experimental and theoretical characterization of their properties, from classic to advanced casting methods such as rheocasting and thixoforming, and from post-processing of magnesium alloy components to their use on the industrial scale.
Thixo- and Rheocasting of Aluminum and Ferrous Materials
A Rheocasting Route: SLC + CRP, A Marriage of Unique Processes
This new process does not use billets, but instead cools the molten metal to a semi-solid state at the same site as the die, eliminating the need to transport the slurry from the sod-maker to the die as in regular rheocasting.