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| Research on Relationship Between Microstructure and Bending Properties of TB5 Sheet |
| SUN Yongna, LIU Changxu, WU Guoqing |
( 1. AEAC Systems Engineering Research Center, Beijing 101304, China,
2. School of Materials Science and Engineering, Beihang University, Beijing 100191, China ) |
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Abstract Due to excellent cold formability,TB5 titanium alloy sheet is apply to forming moderately complicated
spare parts of metal sheet for space flight and aviation, but it has such problems as poor setting, big spring-back after forming.
In the paper, the evolution rules of the deformation behavior, microstructures and formabilities in the bending deformation
were investigated for TB5 titanium alloy sheets.The results show that with the increasing of bending angles and
decreasing of the bend radius of the sheet, the spring-back angle is positive correlation with the grain size and horizontal
distanceand-vertical ratio of the grains. With the increasing of bending angles and decreasing of the bend radius of the
sheet, the hardness at the center of deformation is positive correlation with the grain size, negative correlation with horizontal-
vertical ratio of the grains at the center of deformation.
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2017, 
