Transactions of Materials and Heat Treatment

Title：Finite element analysis on influence of the shape of channel section on ECAP for pure titanium at room temperature

Authors： Zhang Jinlong1 Zhao Xicheng2 Yang Xirong2 Xie Hui1

Unit： 1.Xian Aeronautical University 2.Xian University of Architecture and Technology

KeyWords： section shape ECAP pure titanium deformation behavior

ClassificationCode：

year,vol(issue):pagenumber：2015,40(4):137-412

Abstract：

The process of the equal channel angular pressing (ECAP) for pure titanium at room temperature was simulated by the finite element software Deform-3D. The load variety, deformation behavior and the effective strain distribution were analyzed with the different shapes of same channel section. The results show that the end effect of the different section shapes of specimen increases somewhat, and the gap between sample and the above wall of export channel enlarges with the increase of channel section fillet, however, the load-stroke curve tendencies are consistent for extrusion of different channel sections. The load of the common square section (R=0 mm) by ECAP is the maximum; the vertical effective strain declines from the middle to both ends and the lateral effective strain decreases gradually from top to bottom after ECAP; the effective strains of square (R=0 mm) and circular (R=10 mm) section samples after ECAP become higher, especially the effective strain of core in circular section sample after ECAP is higher than that of appearance, which is different to other forms of plastic deformation.

Funds：

国家自然科学基金资助项目(51474170)；国家高等学校博士学科点专项科研基金资助项目(20116120110012)

张金龙(1976-)，男，硕士，讲师

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