东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2005, Vol. 26 ›› Issue (12): 1164-1167.DOI: -

• 论著 • 上一篇    下一篇

TC2Mδ1.5钛板翻边成形极限及非轴对称畸变的研究

张凌云;崔建忠;   

  1. 东北大学材料电磁过程研究教育部重点实验室;东北大学材料电磁过程研究教育部重点实验室 辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2005-12-15 发布日期:2013-06-24
  • 通讯作者: Zhang, L.-Y.
  • 作者简介:-
  • 基金资助:
    11工程材料国产化研究专题(J11B-CL3)

Investigation on formability and nonaxisymmetric distortions during hole-flanging of TC2M1.5 titanium alloy sheet

Zhang, Ling-Yun (1); Cui, Jian-Zhong (1)   

  1. (1) Key Laboratory of EPM, Northeastern University, Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2005-12-15 Published:2013-06-24
  • Contact: Zhang, L.-Y.
  • About author:-
  • Supported by:
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摘要： 为研究各向异性对圆孔翻边成形的影响,用TC2Mδ1.5 mm钛合金圆板料在室温及600℃高温条件下分别进行了圆孔翻边试验.结果发现,除翻边底孔尺寸小于极限值时在唇口边缘发生破裂的正常失效方式之外,冷翻边制件卸载后发生了凸缘平面翘曲、翻边孔口部椭圆化、唇口边缘高度不一致、壁厚分布不均匀等非轴对称畸变现象.高温热翻边成形有效地提高了成形极限,并消除了凸缘平面翘曲和口部椭圆化,但口部高差以及壁厚不均等现象依然存在.本文在给出极限翻边系数结论的同时,对非轴对称畸变现象进行了定量描述、分析与解释.

关键词: 钛合金板材, 圆孔翻边, 成形性能, 非轴对称化, 各向异性

Abstract: To make sure of the effect of anisotropy on the shape/size precision of workpiece, a series of hole-flanging experiments were carried out at room temperature and 600°C, with 1.5 mm-thick TC2M titanium alloy sheet as specimens on which pre-drilled holes were provided at the center. It was found that there are some nonaxisymmetric distortions such as peripheral flange warpage, elliptical opening shape, uneven lip surface of the finished hole and ununiformly distributed wall thickness after unloading in addition to the normal rupture at lip edge when the initial hole diameter is smaller than the minimum size. The flanging process at high temperature can improve effectively formability, get rid of peripheral warpage and elliptical opening, but the lip surface and wall thickness can not be evened yet. The ultimate hole-flanging coefficient is given in two different states, while the nonaxisymmetric distortions are quantitatively described and analyzed.

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