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研究了不同轧制路径对工业纯钛板机械各向异性及成形性的影响。路径A和路径B是分别沿原始轧向和横向的单向轧制,路径C是交叉轧制,即每次轧制之后旋转90°继续轧制。测试了不同轧制路径获得板材的显微织构、力学性能(强度、伸长率)和各向异性。X射线衍射结果表明从路径A到路径C,轧制板材的织构逐渐减弱。与路径A和路径B相比较,路径C轧制的板材的平面各向异性系数更小。拉深实验显示交叉轧制可以有效地避免制耳的产生;杯突实验表明交叉轧制可以提高钛板成型能力。
The effects of different rolling paths on mechanical anisotropy and formability of industrial pure titanium plates were investigated. Path A and path B are the unidirectional rolling along the original rolling direction and the transverse direction respectively. The path C is the cross-rolling, that is, the rolling is continued by 90 ° after each rolling. The microstructures, mechanical properties (strength, elongation) and anisotropy of sheet obtained from different rolling paths were tested. X-ray diffraction results show that from path A to path C, the texture of the rolled sheet gradually diminishes. As compared with path A and path B, the sheet C rolled by path C has a smaller plane anisotropy coefficient. The deep drawing experiments show that the cross rolling can effectively prevent the ear from forming. The cupping experiments show that the cross rolling can improve the forming ability of titanium plate.