Wu, D., Zhou, J., Zhang, J., Wang, J.
Analyzing partial draining of 7050 aluminum alloy aircraft forging after hot die forming
(2015) Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition), 43 (4), pp. 69-73.
归属机构: School of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
摘要: To clarify the mechanism and contribute to effectively control, numerical simulation was employed and physical experiments were carried out based on a 7050 aluminum alloy aircraft forging and the influencing factors were analyzed. The results indicated that partial draining is determined by a number of factors, including forging method, forging speed and mold structure. Due to the intense shear deformation and local temperature growth, plentiful grains aggregated and recrystallized in the partal draining area of forging. Then, the adjustment and convergence of grains' orientation resulted in the coarse graindefect. Compared with conventional hot die forging, the isothermal forging process is easier to fill the cavity, forging streamline distribution is more reasonable. In conventional hot die forging, the greater the working speed, the greater the probability of partial draining defects formed. With the increase of level convex radius of mould, the average speed of metal flow to mold flash at the end of forming shows a trend of decrease. ©, 2015, Huazhong University of Science and Technology. All right reserved.
作者关键字: 7050 aluminum alloy; For ging method; Forging speed; Mold radius; Numerical simulation; Partial draining
索引关键字: Aluminum; Aluminum alloys; Computer simulation; Dies; Forging; Hot working; Molds; Numerical methods; Numerical models, 7050 aluminum alloy; For ging method; Forging speed; Isothermal forging; Local temperature; Partial draining; Physical experiments; Streamline distributions, Upsetting (forming)
通讯地址: Wu, D.; School of Materials Science and Engineering, Chongqing UniversityChina
出版商: Huazhong University of Science and Technology
来源出版物名称缩写: Huazhong Ligong Daxue Xuebao