Semisolid Casting—Introduction and Fundamentals

Pan, Qingyue; Apelian, Diran; Jorstad, John L.

doi:10.31399/asm.hb.v15.a0005272

Cited by 3 publications

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“…The origins of semisolid metal processing can be traced to the experiments conducted by David Spencer at Massachusetts Institute of Technology in 1971. Today, after more than four decades of research, this metal processing technology has been used to commercially produced casts that require a high integrity [6].…”

Section: Introductionmentioning

confidence: 99%

“…Thixomolding can be used for magnesium alloys, where magnesium granules from 1 to 4 mm are delivered to the mould cavity using a threaded extruder. This causes high shear stresses and together with the effect of external heat, a semisolid suspension is produced [6].…”

Section: Introductionmentioning

confidence: 99%

“…Increasing casting integrity and improving mechanical properties [6]. The main step in SSM processing is to generate metal slurry that exhibits thixotropic behaviour and contains a globular primary phase.…”

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confidence: 99%

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Archives of Foundry Engineering

Martinec,

Pastirčák,

Kantoríková

2019

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The paper deals with the effect of heating of various prepared batch materials into semisolid state with subsequent solidification of the cast under pressure. The investigated material was a subeutectic aluminium alloy AlSi7Mg0.3. The heating temperature to the semisolid was chosen at 50% liquid phase. The used material was prepared in a variety of ways: heat treatment, inoculation and by squeeze casting. Also the influence of the initial state of material on inheritance of mechanical properties and microstructure was observed. The pressure was 100 MPa. Effect on the resulting casting structure, alpha phase distribution and eutectic silicon was observed. By using semisolid squeeze casting process the mechanical properties and microstructures of the casts has changed. The final microstructure of the casts is very similar to the microstructure that can be reached by technology of thixocasting. The mechanical properties by using semisolid squeeze casting has been increased except the heat treated material.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Archives of Foundry Engineering

Martinec,

Pastirčák,

Kantoríková

2019

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Influence of semisolid squeeze casting technology on alpha phase and eutectic of AlSi7Mg0.3

Pastirčák¹,

Martinec²,

Kantoríková³

2020

Manufacturing Technology

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The paper deals with processing of material in semisolid state by the technology of semisolid squeeze casting. The investigated material was a subeutectic aluminium alloy AlSi7Mg0.3. The influence of various preparation methods of batch material on the structure after processing by this technology was studied. Alloy AlSi7Mg0.3 was prepared as gravity cast, inoculated, heat treated and by technology of direct squeeze casting. In article is assessed microstructure of castings before and after processing by technology of semisolid squeeze casting. The shape and distribution of eutectic silicon was observed. The shape and the distribution of alpha phase formations has an impact on whether micro-volumes of molten eutectic will be closed in alpha phase or will be segregated along the boundaries of alpha phase formations. It was observed the partial inheritance in microstructure. Also the segregation in surface layer was observed.

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Casting

2013

Metals Fabrication

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This chapter covers the practices and procedures used for shape casting metals and alloys. It begins with a review of the factors that influence solidification and contribute to the formation of casting defects. It then describes basic melting methods, including induction, cupola, crucible, and vacuum melting, and common casting techniques such as sand casting, plaster and shell casting, evaporative pattern casting, investment casting, permanent mold casting, cold and hot chamber die casting, squeeze casting, semisolid metal processing, and centrifugal casting.

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Semisolid Casting—Introduction and Fundamentals

Cited by 3 publications

References 1 publication

Archives of Foundry Engineering

Archives of Foundry Engineering

Influence of semisolid squeeze casting technology on alpha phase and eutectic of AlSi7Mg0.3

Casting

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