Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 6    No. 3    September 1996

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ROOM-TEMPERATURE MECHANICAL PROPERTIES OF TiAl+Ce ALLOYS
Chen Shiqi, Qu Xuanhui, Huang Baiyun, Lei Changming

Powder Metallurgy Research Institute,Central South University of Technology, Changsha 410083

Abstract:The microstructures and mechanical properties of the TiAl +xCe (x=0.002, 0.005,
0.010, 0.015, 0.020, mole fraction) alloys in annealing condition were investigated. The results showed that the strength and deflection of the TiAl alloys were obviously enhanced by adding a small amount of Ce (e.g 0.002 mole fraction). The analyses show that this improvement was due to the refinement of microstructures and the reduction of the oxygen content in the matrix caused by Ce. However excessive Ce would result in forming coarse particles and a lot of pores, thus lowering the mechanical properties.

 

Key words: Ce TiAl alloy mechanical properties microstructures

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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