QU Xuanhui HUANC Baiyun LEI Changming CHEN Shiqi Central South University of Technology
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Changsha
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China professor
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Powder Metallurgy Research Institute
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Central South University of Technology
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Changsha 410083
,
China
金属学报(英文版)
Synthesis process of a TiAl+TiB_2 composite from the elemental powders was studied by means of differential scanning calorimetry and X-ray diffractometry.TiB_2 particles may form in TiAl matrix at temperature even below 700℃ owing to the exothermic reactions between Ti and Al powders.TiB_2 particles are very thermally stable,and they almost did not change in their relative amount,morphology and size after the synthesized composite was remelted.In addition,the existence of TiB_2 particles has obvious refining effect in the as-cast microstructure of TiAl-base alloys.
关键词:
TiAl alloy
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