Transactions of Materials and Heat Treatment

Title：Thermal deformation behavior on aluminium foam sandwich preformed blank

Authors： Xu Wenbin1 Hu Zhili1 2 3 Pang Qiu4

Unit： 1. Hubei Longzhong Laboratory 2. Hubei Key Laboratory of Advanced Technology of Automobile Components Wuhan University of Technology 3. Hubei Research Center for New Energy & Intelligent Connected Vehicle Wuhan University of Technology 4. School of Mechanical and Electrical Engineering Wuhan Donghu University

KeyWords： aluminum foam sandwich preformed blank friction stir welding powder distribution thermal deformation behavior forming property

ClassificationCode：TB34

year,vol(issue):pagenumber：2023,48(5):44-50

Abstract：

The aluminum foam sandwich preformed blank was produced by friction stir welding process, and its thermal deformation behavior was studied. The results find that when the welding speed is 2000 r·min-1, the welding feed rate is 50 mm·min-1 and the pressing down of shoulder is 0.15 mm, aluminum foam sandwich preformed blank with uniform powder mix and good denseness can be formed. In the deformation temperature range of 350-475 ℃ and the deformation rate range of 0.01-1 s-1, as the deformation temperature rises, the elongation of aluminum foam sandwich preformed blank increases first and then decreases, reaching the highest at 400 ℃, and the peak stress decreases with the increasing of deformation temperature. As the deformation rate increases, the elongation of aluminum foam sandwich preformed blank continues to decrease, while the peak stress increases. In the deformation temperature range of 350-475 ℃, a Fields-Backofen model is established to describe the thermal deformation behavior of aluminum foam sandwich preformed blank, which provides a theoretical and technical basis for the preparation and application of aluminum foam sandwich components with complex curved surfaces.

Funds：

湖北隆中实验室自主创新研究项目（2022ZZ-04）；湖北省自然科学基金资助项目（2021CFB523）；湖北省重点研发计划项目（2021BAA200）；湖北省科技重大项目（2022AAA001）

作者简介：徐文斌(1997-)，男，硕士研究生，E-mail：634269813@qq.com；通信作者：庞秋(1979-)，女，博士，硕士生导师，副教授，E-mail：pqiuhit@126.com

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