Influence of tungsten on microstructure of mechanically alloyed γ‐TiAl | Zendy

DYMEK S. | Zendy; WRÓBEL M. | Zendy; BLICHARSKI M. | Zendy

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Influence of tungsten on microstructure of mechanically alloyed γ‐TiAl

Author(s) -

DYMEK S.,

WRÓBEL M.,

BLICHARSKI M.

Publication year - 2006

Publication title -

journal of microscopy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.569

H-Index - 111

eISSN - 1365-2818

pISSN - 0022-2720

DOI - 10.1111/j.1365-2818.2006.01658.x

Subject(s) - materials science , extrusion , alloy , hot pressing , microstructure , metallurgy , tungsten , compaction , powder metallurgy , consolidation (business) , grain size , composite material , business , accounting

Summary This article presents preliminary results of the processing and characterization of γ‐TiAl alloy modified by W addition. An alloy with the target chemical composition of TiAl−5W (at.%) was synthesized by mechanical alloying. Two methods were used for powder compaction: hot pressing at 1300 °C and hot extrusion at 1100 °C. Hot extrusion turned out to be a superior consolidation technique over hot pressing. The matrix of final alloy was composed of a phase based on TiAl and a minor amount of Ti 3 Al. The grain size in the extruded alloy was much smaller than in the hot‐pressed one. Minute W particles formed a dispersoid.

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