INVESTIGATION OF MULTI-STEP THERMO-MECHANICAL TREATMENT OF CAN-FORGED TiAl-BASED ALLOY

Abstract

Abstract: The effects of a new technology, multi-step thermo-mechanical treatment, on the microstructure, deformation substructure and mechanical properties at ambient and elevated tempemture of can-forged Ti-33 Al-3 Cr-0.5Mo (wt%) Alloy were investigated.The results show that, after multi-step thermo-mechanical treatment of can-forged specimens, homogeneous, fine microstructures can be obtained in the whole TiAl-based alloy specimens. Furthermore, the specimen with homogeneous and fine full lamellae microstructure demonstrutes excellent comprehensive mechanical properties at ambient and elevated temperature.

Key words: TiAl-based alloy, mechanical property, heat treatment

Y.H. He; B. Y. Huang; Y. Liu and Y.X. Liu (Powder Metallurgy Research Institute, Central South University of Technology, Changsha 410083, China). INVESTIGATION OF MULTI-STEP THERMO-MECHANICAL TREATMENT OF CAN-FORGED TiAl-BASED ALLOY[J]. Acta Metallurgica Sinica (English Letters), 1997, 10(4): 369-374.

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INVESTIGATION OF MULTI-STEP THERMO-MECHANICAL TREATMENT OF CAN-FORGED TiAl-BASED ALLOY

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