Effect of water cooling on the production of Al-Si thixotropic feedstock by cooling slope casting

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8 Citations (Scopus)

Abstract

Semi-solid processing routes for metallic alloys require feedstock materials with non-dendritic microstructure in the semi-solid state. The material then behaves in a thixotropic way in that, when it is sheared it flows and can be forced to fill a die and, when it is allowed to stand it thickens again. Cooling slope casting process is one of the methods used to produce such structure whereby molten alloy is poured onto a cooling slope into a mould before semi-solid metal processing is carried out. This paper discusses the resulting microstructures and mechanical properties of the ingot cast via the cooling slope. Al-Si alloy was melted in crucible graphite with dry argon degassing then poured on mild steel cooling slope which is coated with Boron Nitride. In this experiment, comparison between cooling slope with and without water cooling was investigated. From the experiment, it can be concluded that the water cooling influenced the fraction volume of α-Al particle, grain size, micro hardness, and shape factor (SF).

Original languageEnglish
Pages (from-to)158-166
Number of pages9
JournalEuropean Journal of Scientific Research
Volume32
Issue number2
Publication statusPublished - 2009

Fingerprint

cooling water
Cooling water
Casting
feedstocks
Feedstocks
Cooling
Slope
cooling
Water
Metalloids
Graphite
Argon
water
Steel
Hardness
microstructure
Particle Size
Fungi
Microstructure
Boron nitride

Keywords

  • Cooling slope casting
  • Non-dendritic microstructure
  • Semi-solid processing
  • Water cooling

ASJC Scopus subject areas

  • General

Cite this

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abstract = "Semi-solid processing routes for metallic alloys require feedstock materials with non-dendritic microstructure in the semi-solid state. The material then behaves in a thixotropic way in that, when it is sheared it flows and can be forced to fill a die and, when it is allowed to stand it thickens again. Cooling slope casting process is one of the methods used to produce such structure whereby molten alloy is poured onto a cooling slope into a mould before semi-solid metal processing is carried out. This paper discusses the resulting microstructures and mechanical properties of the ingot cast via the cooling slope. Al-Si alloy was melted in crucible graphite with dry argon degassing then poured on mild steel cooling slope which is coated with Boron Nitride. In this experiment, comparison between cooling slope with and without water cooling was investigated. From the experiment, it can be concluded that the water cooling influenced the fraction volume of α-Al particle, grain size, micro hardness, and shape factor (SF).",
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AU - Budiman, H.

AU - Omar, Mohd. Zaidi

AU - Jalar @ Jalil, Azman

AU - A Ghani, Jaharah

PY - 2009

Y1 - 2009

N2 - Semi-solid processing routes for metallic alloys require feedstock materials with non-dendritic microstructure in the semi-solid state. The material then behaves in a thixotropic way in that, when it is sheared it flows and can be forced to fill a die and, when it is allowed to stand it thickens again. Cooling slope casting process is one of the methods used to produce such structure whereby molten alloy is poured onto a cooling slope into a mould before semi-solid metal processing is carried out. This paper discusses the resulting microstructures and mechanical properties of the ingot cast via the cooling slope. Al-Si alloy was melted in crucible graphite with dry argon degassing then poured on mild steel cooling slope which is coated with Boron Nitride. In this experiment, comparison between cooling slope with and without water cooling was investigated. From the experiment, it can be concluded that the water cooling influenced the fraction volume of α-Al particle, grain size, micro hardness, and shape factor (SF).

AB - Semi-solid processing routes for metallic alloys require feedstock materials with non-dendritic microstructure in the semi-solid state. The material then behaves in a thixotropic way in that, when it is sheared it flows and can be forced to fill a die and, when it is allowed to stand it thickens again. Cooling slope casting process is one of the methods used to produce such structure whereby molten alloy is poured onto a cooling slope into a mould before semi-solid metal processing is carried out. This paper discusses the resulting microstructures and mechanical properties of the ingot cast via the cooling slope. Al-Si alloy was melted in crucible graphite with dry argon degassing then poured on mild steel cooling slope which is coated with Boron Nitride. In this experiment, comparison between cooling slope with and without water cooling was investigated. From the experiment, it can be concluded that the water cooling influenced the fraction volume of α-Al particle, grain size, micro hardness, and shape factor (SF).

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