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Titanium-Aluminides by Hot Isostatic Pressing of Cold Extruded Titanium-Aluminium Powder Mixtures.

1991; The Iron and Steel Institute of Japan; Volume: 31; Issue: 10 Linguagem: Inglês

10.2355/isijinternational.31.1093

1347-5460

Michael Dahms, J. Seeger, Wilfried Smarsly, B. Wildhagen,

Metallurgy and Material Forming

Gamma-base titanium-aluminides were produced by reactive hot isostatic pressing (RHIP) of cold extruded titanium-aluminium elemental powder mixtures. Various RHIP temperatures as well as additional heat treatments were applied in order to obtain different microstructures. Compression samples were tested between room temperature and 900°C. Changes in microstructure during compression such as microcracking, inhomogeneous deformation and dynamic recrystallization were investigated. The measured properties are discussed with respect to microstructure.