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Title: Influence of IMC in the Semisolid Behaviour of an Eutectic Sn-Pb/Cu Slurry

Abstract

A mixture of a liquid Sn-Pb alloy reinforced with solid Cu particles has been found to show thixotropic and pseudoplastic behaviour. The presence of an intermetallic compound (IMC) between the Cu particles and the molten matrix has some very important consequences in the rheological behaviour of the slurry. The semisolid material is obtained mixing a sufficient amount of Cu particles with a liquid eutectic Sn-Pb alloy by mechanical stirring at a given temperature and time. The intermetallic compound is formed from the reaction of solid Cu and liquid Sn. This reaction results in some displacement in the phase diagram, affecting the liquid alloy composition, moving the liquidus temperature and therefore altering the balance of %wt solid- %wt liquid necessary to obtain the best thixotropic behaviour. In this work a model of the solid fraction of the slurry taking into account the IMC growth rate is presented. This model is also used to predict the processing window under which the material keeps the thixotropic behaviour.

Authors:
 [1]; ;  [1];  [2]
  1. Departamento de Ciencia de los Materiales e Ingenieria Metalurgica. Universidad Politecnica de Catalunya - ETSEIB, Av. Diagonal 647, 08028, Barcelona (Spain)
  2. (Spain)
Publication Date:
OSTI Identifier:
21056969
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 907; Journal Issue: 1; Conference: 10. ESAFORM conference on material forming, Zaragoza (Spain), 18-20 Apr 2007; Other Information: DOI: 10.1063/1.2729668; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COPPER ALLOYS; EUTECTICS; INTERMETALLIC COMPOUNDS; LEAD ALLOYS; LIQUIDS; PHASE DIAGRAMS; PROCESSING; RHEOLOGY; SLURRIES; SOLIDS; STIRRING; THIXOTROPY; TIN ALLOYS

Citation Formats

Merizalde, Carlos, Cabrera, Jose-Maria, Prado, Jose-Manuel, and CTM Centro Tecnologico de Manresa - Av. Bases de Manresa 1, 08242, Manresa. Influence of IMC in the Semisolid Behaviour of an Eutectic Sn-Pb/Cu Slurry. United States: N. p., 2007. Web. doi:10.1063/1.2729668.
Merizalde, Carlos, Cabrera, Jose-Maria, Prado, Jose-Manuel, & CTM Centro Tecnologico de Manresa - Av. Bases de Manresa 1, 08242, Manresa. Influence of IMC in the Semisolid Behaviour of an Eutectic Sn-Pb/Cu Slurry. United States. doi:10.1063/1.2729668.
Merizalde, Carlos, Cabrera, Jose-Maria, Prado, Jose-Manuel, and CTM Centro Tecnologico de Manresa - Av. Bases de Manresa 1, 08242, Manresa. 2007. "Influence of IMC in the Semisolid Behaviour of an Eutectic Sn-Pb/Cu Slurry". United States. doi:10.1063/1.2729668.
@article{osti_21056969,
title = {Influence of IMC in the Semisolid Behaviour of an Eutectic Sn-Pb/Cu Slurry},
author = {Merizalde, Carlos and Cabrera, Jose-Maria and Prado, Jose-Manuel and CTM Centro Tecnologico de Manresa - Av. Bases de Manresa 1, 08242, Manresa},
abstractNote = {A mixture of a liquid Sn-Pb alloy reinforced with solid Cu particles has been found to show thixotropic and pseudoplastic behaviour. The presence of an intermetallic compound (IMC) between the Cu particles and the molten matrix has some very important consequences in the rheological behaviour of the slurry. The semisolid material is obtained mixing a sufficient amount of Cu particles with a liquid eutectic Sn-Pb alloy by mechanical stirring at a given temperature and time. The intermetallic compound is formed from the reaction of solid Cu and liquid Sn. This reaction results in some displacement in the phase diagram, affecting the liquid alloy composition, moving the liquidus temperature and therefore altering the balance of %wt solid- %wt liquid necessary to obtain the best thixotropic behaviour. In this work a model of the solid fraction of the slurry taking into account the IMC growth rate is presented. This model is also used to predict the processing window under which the material keeps the thixotropic behaviour.},
doi = {10.1063/1.2729668},
journal = {AIP Conference Proceedings},
number = 1,
volume = 907,
place = {United States},
year = 2007,
month = 4
}