Abstracts Book - IMRC 2018

• SE2-P063
MECHANICAL CHARACTERIZATION OF TITANIUM MATRIX
COMPOSITES WITH DIFFERENT TiC ADDITIONS VIA SPARK
PLASMA SINTERING
Ivan Gerardo Farias Velazquez 1 , Luis Rafael Olmos Navarrete 2 , Omar Jiménez Alemán 1
1 Universidad de Guadalajara, Departamento de Ingeniería de Proyectos, Mexico. 2 Universidad
Michoacana de San Nicolás de Hidalgo, Instituto de Investigaciones en Ciencias de la Tierra,
Mexico.
Titanium alloys are engineering materials widely used in biomedical, aerospace
and marine applications due to their excellent mechanical strength at room
conditions in regard to their specific weight. However, these materials exhibit
inferior wear resistance and suffer a considerable loss of mechanical strength
at high temperatures. In view of that, this work focused on processing Titanium
Matrix Composites (TMC) as follows; Ti-Ti/TIH 2 1:1 ratio and 3 different TiC
reinforces contents of 3, 10 and 30 % vol. respectively. TMC was fabricated using
Spark Plasma Sintering (SPS) at 750 °C in cycles of 15 minutes with heating and
cooling rate of 100 °C/min. Sintering temperature was chosen in order to avoid
phase transformation. The mechanical properties and wear resistance were
evaluated through Vickers microindentations and Nanoindentation. Results
showed a slight increment of microharness from 281 to 295 HV when TiC
increased from 3 to 10% vol. Then, composites with 30 % vol of TiC reached a
maximum of 554 HV. Both harness tests, showed the standard deviation to
increase with the reinforced percentage which could indicate some degree of
anisotropy. The Elastic modulus measured from nanoindentation tests showed
a similar behavior. Finally, The Coefficient of Friction (CoF) shows a minimum of
0.2 for 10% TIC samples and up to 0.6 for 30 % TiC samples.
Keywords: Powder Metallurgy, Metal Matrix Composites, Mechanical Behavior
Presenting authors email: ivanger86@gmail.com