Influence of different rolling routes on mechanical anisotropy and formability of commercially pure titanium sheet

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（英文）

Influence of three different rolling routes on mechanical anisotropy and formability of commercially pure titanium sheetwas investigated.Route A and Route B are unidirectional rolling(UR)where the rolling direction is along initial rolling direction(RD)and transverse direction(TD),respectively.Route C is cross rolling(CR)where the rolling direction is changed by90°aftereach rolling pass.The microstructure and texture,tensile mechanical properties including strength and elongation,and also theanisotropy of the UR and CR sheets were investigated at room temperature.The XRD results indicate that the texture intensity ofrolled samples gradually weakens from Route A to Route C.Compared with Route A and Route B rolled samples,the Route C rolledsamples show a smaller planar anisotropy.The deep drawing tests reveal that cross rolling can avoid the occurrence of earing.Erichsen tests indicate that rolling routes have an effect on stretch formability of pure titanium sheet.

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。