Effect of Ti Particle Size on Reaction Synthesis of Ti Aluminide

Abstract:

Titanium aluminide intermetallic was made through reaction synthesis (RS) process using elemental powders. Pressure assisted synthesis was carried out at high temperature under vacuum. Ti powder with two different particle sizes (200μm and 30μm average) were used in RS. Synthesized blocks were homogenized and characterized for chemical homogeneity, density, phase formation and microstructure evolution. Products near to theoretical density have been obtained with uniform chemistry after homogenization. Al₃Ti as a major phase along with TiAl as minor phase was confirmed after RS and TiAl along with Ti₃Al was observed after homogenization. Homogenization cycle was found to be different for the alloys made through different Ti particle sizes. Significant role of Ti particle size has been observed in this pressure assisted RS process.

• Periodical: Materials Science Forum (Volume 710)
• Pages: 314-319
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.710.314
• Online since: January 2012
• Authors: Rohit Kumar Gupta, Bhanu Pant, Vijaya Agarwala, Parameshwar Prasad Sinha
• Keywords: Particle Size, Pressure Assisted, Reaction Synthesis, Ti Aluminide

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