Transactions of Materials and Heat Treatment

Title：Laser bending of titanium alloy sheet with preload

Authors： Zhang Yongchun

Unit： Dalian Ocean University

KeyWords： preload titanium alloy sheet laser bending bending angle

ClassificationCode：TN249；TG386.3+1

year,vol(issue):pagenumber：2015,40(3):66-69

Abstract：

For the problem that it is difficult for titanium alloy sheet to form the required shape due to large spring-back when it is bent at room temperature, a new method of laser bending titanium alloy sheet with preload was put forward. Firstly titanium alloy sheet was pre-deformed by a fixture, then its surface was scanned by the laser beam with a certain intensity along the given path, and it was formed precisely due to the thermal effect of the laser to reduce the yield strength of the scanning area of materials and improve its plastic deformation ability. A feasibility test of laser bending with preload for Ti-5Al-2.5Sn alloy sheet was done. The experimental results show that the larger is the preload or the slower is the laser scan speed, the bigger is the bending angle. Laser bending mechanism with preload was described and its main influence factors were analyzed.

Funds：

辽宁省教育厅2014年科学研究一般项目（L2014287）

张永春（1971-），男，硕士，副教授

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