TC16鈦合金冷鐓變形的特征
發(fā)布時間:2018-08-26 17:18
【摘要】:通過快速頂鍛實驗研究退火態(tài)TC16鈦合金冷鐓變形行為,利用顯微硬度計、透射電鏡及XRD技術分析TC16鈦合金冷鐓變形后的組織和性能變化。結果表明,退火態(tài)TC16鈦合金具有良好的塑性變形能力,能實現無裂紋1/8鍛壓比冷鐓變形。冷鐓樣品不均勻變形明顯,形成一字雙叉剪切帶,硬度值在剪切帶區(qū)域最大。鍛壓比小于1/4時以位錯強化為主,大于1/4時以細晶強化為主。鍛壓比為1/4時冷鐓樣品硬度梯度最大,力學性能不穩(wěn)定,鍛壓比大于1/4后,力學性能逐漸趨于穩(wěn)定。
[Abstract]:The cold heading deformation behavior of annealed TC16 titanium alloy was studied by rapid upsetting test. The microstructure and properties of TC16 titanium alloy after cold heading deformation were analyzed by microhardness tester, transmission electron microscope and XRD technique. The results show that the annealed TC16 titanium alloy has good plastic deformation ability and can realize 1 / 8 forging ratio cold heading deformation without crack. The inhomogeneous deformation of the cold heading sample is obvious, forming a double cross shear band, and the hardness is the largest in the shear band region. When the forging ratio is less than 1 / 4, the dislocation strengthening is dominant, and the fine grain strengthening is more than 1 / 4. When the forging ratio is 1 / 4, the hardness gradient is the largest and the mechanical properties are unstable. When the forging ratio is more than 1 / 4, the mechanical properties tend to be stable.
【作者單位】: 大連理工大學;萍鄉(xiāng)學院;大連盛輝鈦業(yè)有限公司;
【基金】:中國博士后科學基金(2014M551074) 江西省教育廳科學技術研究項目(GJJ13787)
【分類號】:TG319
[Abstract]:The cold heading deformation behavior of annealed TC16 titanium alloy was studied by rapid upsetting test. The microstructure and properties of TC16 titanium alloy after cold heading deformation were analyzed by microhardness tester, transmission electron microscope and XRD technique. The results show that the annealed TC16 titanium alloy has good plastic deformation ability and can realize 1 / 8 forging ratio cold heading deformation without crack. The inhomogeneous deformation of the cold heading sample is obvious, forming a double cross shear band, and the hardness is the largest in the shear band region. When the forging ratio is less than 1 / 4, the dislocation strengthening is dominant, and the fine grain strengthening is more than 1 / 4. When the forging ratio is 1 / 4, the hardness gradient is the largest and the mechanical properties are unstable. When the forging ratio is more than 1 / 4, the mechanical properties tend to be stable.
【作者單位】: 大連理工大學;萍鄉(xiāng)學院;大連盛輝鈦業(yè)有限公司;
【基金】:中國博士后科學基金(2014M551074) 江西省教育廳科學技術研究項目(GJJ13787)
【分類號】:TG319
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