Temperature Control in Spark Plasma Sintering: An FEM Approach

Powder consolidation assisted by pulsed current and uniaxial pressure, namely, Spark Plasma Sintering (SPS), is increasingly popular. One limitation however lies in the difficulty of controlling the sample temperature during compaction. The aim of this work is to present a computational method for the assembly temperature based on the finite elements method (FEM). Computed temperatures have been compared with experimental data for three different dies filled with three materials with different electrical conductivities (TiAl, SiC, Al2O3). The results obtained are encouraging: the difference between computed and experimental values is less than 5%. This allows thinking about this FEM approach as a predictive tool for selecting the right control temperatures in the SPS machine.

[1]  W. Marsden.  I and J , 2012 .

[2]  Marc Thomas,et al.  Microstructures and mechanical properties of TiAl alloys consolidated by spark plasma sintering , 2008 .

[3]  A. Couret,et al.  Application of Spark Plasma Sintering to Titanium Aluminide Alloys , 2007 .

[4]  Z. A. Munir,et al.  The effect of electric field and pressure on the synthesis and consolidation of materials: A review of the spark plasma sintering method , 2006 .

[5]  K. Vanmeensel,et al.  Modelling of the temperature distribution during field assisted sintering , 2005 .

[6]  Zuhair A. Munir,et al.  Fundamental investigations on the spark plasma sintering/synthesis process: II. Modeling of current and temperature distributions , 2005 .

[7]  M. Carmen,et al.  Nuevos intermetálicos gamma-tial: estudio y optimización microestructural para su aplicación en aeronáutica , 2005 .

[8]  J. Groza,et al.  Temperature evolution during field activated sintering , 2004 .

[9]  K. Matsugi,et al.  Temperature distribution at steady state under constant current discharge in spark sintering process of Ti and Al2O3 powders , 2003 .

[10]  Yucheng Wang,et al.  Study of temperature field in spark plasma sintering , 2002 .

[11]  B. Karlsson,et al.  Anisotropy in thermal transport properties of cast γ-TiAl alloys , 2001 .

[12]  K. Ishida,et al.  Phase equilibria in the Ti–Al binary system , 2000 .

[13]  V. Vasudevan,et al.  Phase equilibria and transformations in Ti–(25–52) at.% Al alloys studied by electrical resistivity measurements , 1998 .

[14]  A. Couret,et al.  A QUANTITATIVE TEM ANALYSIS OF THE LAMELLAR MICROSTRUCTURE IN TiAl BASED ALLOYS , 1997 .

[15]  H. Inui,et al.  Ordered domains in tial coexisting with ti3al in the lamellar structure of ti-rich tial compounds , 1992 .

[16]  A. Sprecher,et al.  Electroplasticity—the effect of electricity on the mechanical properties of metals , 1990 .

[17]  R. Stephenson.  A and V , 1962, The British journal of ophthalmology.