(哈爾濱工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院， 哈爾濱 150001)
摘 要: 研究了塑性變形不均勻性對(duì)Ti153合金冷強(qiáng)力旋壓可旋性和成形質(zhì)量的影響。結(jié)果表明強(qiáng)力旋壓時(shí)由于局部加載引起金屬塑性變形不均勻，從而導(dǎo)致裂紋產(chǎn)生和內(nèi)外表面晶粒尺寸的不均勻性。為避免冷強(qiáng)旋時(shí)產(chǎn)生裂紋，第1道次的減薄率取30%～40%為宜；為避免組織不均勻性，總的減薄率要達(dá)到60%以上。
關(guān)鍵字: 冷強(qiáng)力旋壓； Ti-15-3； 塑性變形
（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
