Advances and challenges on springback control for creep age forming of aluminum alloy  

作　　者：Liwen ZHANG Heng LI Tianjun BIAN Changhui WU Yang GAO Chao LEI 

机构地区：[1]Taicang Yangtze River Delta Research Institute of NPU,Northwestern Polytechnical University,Taicang 215400,China [2]State Key Lab of Solidification Processing,School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 710072,China [3]Shanghai Aerospace Equipments Manufacturer Co.,Ltd.,Shanghai 200245,China [4]School of Materials Science and Engineering,Xi'an University of Technology,Xi'an 710048,China

出　　处：《Chinese Journal of Aeronautics》2022年第10期8-34,共27页中国航空学报（英文版）

基　　金：financial support from the Key Program of the National Natural Science Foundation of China (No.51235010);the National Science Fund for Excellent Young Scholars (No.51522509);the National Natural Science Foundation of China (NO.51905424)

摘　　要：Creep age forming(CAF)is an advanced forming technology that combines creep deformation and age hardening processes.When compared with the conventional forming technologies including roll bending and shot-peen forming,CAF has many advantages of low residual stress,excellent dimensional stability,good service performance and short production cycle.It is an optimal technique for precise manufacturing for shape and properties of large-scale complicated thinwalled components of light-weight and high strength aluminum alloys in the aviation and aerospace industries.Nevertheless,CAF has an inevitable disadvantage that a large amount of springback occurs after unloading,which brings a challenge on the accurate shape forming and property tailoring of components.Therefore,how to achieve accurate prediction and control of springback has always been a bottleneck hindering the development of CAF to more industrial applications.After the factors of affecting springback and measures of reducing springback are summarized from the internal and external aspects,constitutive models for predicting springback and springback compensation methods for CAF of aluminum alloy panel components are reviewed.Then,a review of research progresses on tool design for CAF is presented.Finally,in view of the key issue that it is difficult to predict and control the shape and properties of components during CAF,the technical challenges are discussed and future development trends of CAF are prospected.

关 键 词：Aluminum alloy Creep age forming Integrated manufacturing Springback compensation Tool design 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程] V46