The microstructure and properties of as-extruded γ-TiAl

Dong Liu,ChunGuang Bai,Yuyou Cui,Rui Yang

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering（2005）

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摘要

Ti-47Al-2Cr-2Nb-0.15B was extruded at α+γ dual phase region and a single phase region at different temperatures, followed by various heat treatments. The microstructure of DP, NFL and FL could be obtained respectively. Though adjusting the cooling rate from a single phase, the FL with moderate lamellar spacing was achieved, whose microstructure has good RT ductility and comprehensive mechanical properties.

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关键词

Ductility,Extrusion,Full lamellar,Heat treatment,TiAl

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