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鞠洪涛,徐东生,单飞虎,杨锐.Ti-6Al-4V电弧熔丝增材轧制复合制造的有限元模拟[J].稀有金属材料与工程(英文),2020,49(3):878~882.[Ju Hongtao,Xu Dongsheng,Shan Feihu and Yang Rui.Finite Element Simulation of Hybrid Manufacturing of Ti-6Al-4V by Wire Arc Additive Manufacturing and Rolling[J].Rare Metal Materials and Engineering,2020,49(3):878~882.]
Finite Element Simulation of Hybrid Manufacturing of Ti-6Al-4V by Wire Arc Additive Manufacturing and Rolling
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Received:June 24, 2019  Revised:September 03, 2019
DOI:
Key words: Additive manufacture  rolling  residual stress  finite element simulation
Foundation item:国家重点研发计划项目资助(2016YFB0701304)
Author NameAffiliation
Ju Hongtao,Xu Dongsheng,Shan Feihu and Yang Rui  
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Abstract:
      In Wire Arc Additive Manufacturing (WAAM), residual stress is easily generated during solidification and subsequent cooling, which affects the formation and use of the components. In this paper, finite element simulations are carried out to investitgate the influence of roller reductions on the temperature, stress, strain and residual stress distribution in components during the hybrid forming of Ti-6Al-4V alloy by WAAM and interlayer rolling. The results show that interlayer rolling reduce the residual macroscopic stress significantly in the deposited metal, and at the same time reduce the overall stress on the substrate. Increasing reduction can reduce significantly the macroscopic residual stresses and distorsion of the components. The microstructure of the material can be changed dramatically by the plastic deformation after rolling, which lead to a new route for the optimization of the microstructure during additive manufcturing.