(哈尔滨工业大学 材料科学与工程学院， 哈尔滨 150001)
摘 要: 研究了塑性变形不均匀性对Ti153合金冷强力旋压可旋性和成形质量的影响。结果表明强力旋压时由于局部加载引起金属塑性变形不均匀，从而导致裂纹产生和内外表面晶粒尺寸的不均匀性。为避免冷强旋时产生裂纹，第1道次的减薄率取30%～40%为宜；为避免组织不均匀性，总的减薄率要达到60%以上。
关键字: 冷强力旋压； Ti-15-3； 塑性变形
（School of Materials Science and Engineering， Harbin Institute of Technology，Harbin 150001， P.R.China）
Abstract:The effects of plastic deformation inhomogeneity on spinnability and forming quality of Ti153 during the process of cold power spinning were studied. The results show that the inhomogeneity of plastic deformation is mainlycaused by local load. The formation of cracks and the inhomogeneity ofthe crystal size on the inside and outside surface are brought out by the inhomogeneity of plastic deformation. In order to avoid the cracks in cold powerspinning, the reduction rate of 30%～40% in the first spinning pass is adopted,and total reduction rate of more than 60% is achieved to reduce the inhomogeneity of the microstructures.
Key words: cold power spinning； Ti-15-3； plastic deformation
