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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    Special 1    November 2007

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EBSD characterization of recrystallization microstructure of cold-swaged Ti-23Nb-0.7Ta-2Zr-O alloy
GUO Wen-yuan(郭文渊), SUN Jian(孙  坚), LI Xiao-ling(李晓玲), WU Jian-sheng(吴建生)

School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Abstract:The microstructures of the cold-swaged and recrystallized Ti-23Nb-0.7Ta-2Zr-O (TNTZO) (mole fraction, %) alloy were investigated by electron backscatter diffraction (EBSD). The difference in microstructure, texture and recrystallization process was evaluated between the TNTZO alloy and traditional body centered cubic (bcc) metals. The results show that the cold-swaged TNTZO alloy presents a pronounced  110  fiber texture in the axial direction. The recrystallization of the TNTZO alloy is achieved by the nucleation of new grains and the growth of these new grains at the expense of the deformed structure. The TNTZO alloy behaves a very similar way to traditional bcc metals in the features of the microstructure, texture and recrystallization.

 

Key words: titanium alloy; cold-swaged; recrystallization; EBSD; texture

ISSN 1672-7029
CN 43-1423/U

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