Abstract
Semisolid processing is a production method for metallic alloys and metal matrix composites by subjecting them to temperatures between the solidus and liquidus. The material then behaves thixotropically as it flows when sheared but thickens again when allowed to stand. Die design and process prerequisites such as ram speed, time, and needed lubricants were all part of the trialand- error process. In general, rules controlling the designation of the casting and forging molds cannot be directly applied to metallic alloys and metal matrix composites (MMCs) in a semisolid state since the flow behavior of the materials in a semisolid state is different from that of a completely liquid or thoroughly solid form; therefore, a better and more comprehensive understanding of the semisolid flow behavior within the mold, the dominant frictional conditions, and optimized attributes of the process can be valuable steps in industrialization. The efforts put into industrializing and introducing patents on semisolid processes throughout recent years reveal the need to analyze the possibility of forming intricate industrial parts. This short review article reviews trends of numerical works on the semisolid forming of metals and metal matrix composites.
Keywords: Semisolid forming, metallic alloys, metal matrix composites, modeling, flow behavior, thixotropy, rheology.
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