Transactions of Materials and Heat Treatment

Title：Experimental study on double-sided roll forming of TC4 disk

Authors： ZHANG Feng-guang JIN Quan-lin LI Hong-bo

Unit： China Academy of Machinery Science & Technology Yanshan University

KeyWords： TC4 disk double sided roll forming roll groove microstructure

ClassificationCode：TG335

year,vol(issue):pagenumber：2013,38(5):87-91

Abstract：

An experimental study on hot double-sided roll forming of TC4 titanium alloy disk was presented. The shape change and microstructure distribution of the deformed disk were observed in the forming experiment. It is found out that the shape change character of the TC4 disk hot rolled is similar to that of the lead disk coldly rolled. The main shape changes include a disk diameter increase, a local thickness increase near groove positions, and the “shuaigao” phenomena. It is also found out that the temperature and the deformation have significant effect on the microstucture of disk, so there is obvious difference in microstructure evolution in different positions of the disk. For example, in the disk fringe, the microstructure state is in β phase region due to high temperature and small strain; in the region near the disk center, the microstructure state is in α+β phase region due to lower temperature and small strain; in the transition region, the microstructure state is in α+β phase region due to middle temperature (930 ℃) and large strain, the deformation in groove surface is much bigger than that in groove center, the α phase decreases and there is more α phase in groove surface translated into β phase than that in groove center.

Funds：

国家973计划资助项目（2011CB606306-3）;国家自然科学基金资助项目(50975116)

张风光（1987-），男，硕士研究生

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