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Non-dendritic Structural Changes in Al–7Si Alloy Cast Through Rapid Slurry Formation (RSF) Process

Jain, Aakash and Ratke, Lorenz and Sharma, Ashok (2012) Non-dendritic Structural Changes in Al–7Si Alloy Cast Through Rapid Slurry Formation (RSF) Process. Transactions Indian Institute Metals, 65. Springer Verlag. DOI: 10.1007/s12666-012-0179-9.

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Official URL: http://www.springerlink.com/content/1847466014848056/


Rapid slurry formation (RSF) is a semi-solid metal forming technique,which is based on a so-called solid enthalpy exchange material.The beauty of the process is that the slurry is controlled by relative added amounts of the alloy system used. It is not necessary to accurately control the heat flux to surrounding media such as, crucible or mould. In the present investigation 15 % solid fraction in Al–7Si alloy slurry has been produced by RSF method. The slurry so preparedwas cast in gravity die cast mouldwith water cooling arrangement. Thus ingot of size 30 cm 9 5 cm 9 2.5 cmcould be produced. The microstructure showed rosette and globular type a-Al morphology. Tensile properties evaluated were higher than as cast Al–7Si alloy. During slurry formation coarsening of particles was experimentally investigated and also theoretically described by Lifshitz-Slyozov-Wagner (LSW) theory and convective mass flow equations.

Document Type:Article
Title:Non-dendritic Structural Changes in Al–7Si Alloy Cast Through Rapid Slurry Formation (RSF) Process
AuthorsInstitution or Email of Authors
Jain, AakashMNIT Jaipur
Date:October 2012
Journal or Publication Title:Transactions Indian Institute Metals
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Publisher:Springer Verlag
Keywords:Al–7Si alloy, Semi-solid , RSF , LSW theory,  Convective mass flow,  Tensile properties
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Neuartige Fahrzeugstrukturen (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Prof. Lorenz Ratke
Deposited On:16 Oct 2012 10:35
Last Modified:16 Oct 2012 10:35

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