Phase Transformation and Deformation Mechanism of Ti_3Al-base Alloy

Abstract

Abstract: The phase transformation and deformation mechanism of the alloy based on composition Ti_3Al with addition of Nb,V,Mo have been studied by use of transmission electron microscopy (TEM).It has been shown that the orientation relationship of α_2 phase transformed from β phase is:(0001)α_2// (l10)β,[1210]α_2//[111]β.The present dislocation slip systems in α_2 phase are (1100)[0001] and (1100)<1120>.There also exist α_2 twins which have new twin relationship and the twin plane is (2021).

Key words: Ti_3Al-base alloy, phase transformation, deformation mechanism

By WANG Shuncai LI Chunzhi GAO Yang CAO Chunxiao YAN Minggao Institute of Aeronautical Materials,Beijing,100095,China.To whom correspondence should be addressed.. Phase Transformation and Deformation Mechanism of Ti_3Al-base Alloy[J]. J Mater Sci Technol, 1991, 7(1): 9-14.

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Phase Transformation and Deformation Mechanism of Ti_3Al-base Alloy

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