Fabrication of TiAl Intermetallic by Spark Plasma Sintering

Abstract:

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The γ-TiAl intermetallic compounds were produced at the temperature ranging from 850°C to 1050°C by the Spark Plasma Sintering (SPS) process. The effects of sintering temperature and holding time on the mechanical properties of γ-TiAl intermetallic compounds were investigated. The γ-TiAl intermetallic compounds sintered at 1050°C for 10 min showed a high relative density more than 98%, and had the best three-point bending strength of 643MPa, fracture toughness of 12 MPa·m1/2 and microhardness of 560MPa. The microstructural observations indicated typical characteristics of intergranular fracture, which meant the poor ductility of γ-TiAl intermetallic compounds.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1050-1052

DOI:

10.4028/www.scientific.net/KEM.336-338.1050

Citation:

H. T. Wu et al., "Fabrication of TiAl Intermetallic by Spark Plasma Sintering", Key Engineering Materials, Vols. 336-338, pp. 1050-1052, 2007

Online since:

April 2007

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Price:

$35.00

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