Transactions of Materials and Heat Treatment

Title：Hot stamping formability for unidirectional thermoplastic glass fiber metal laminates

Authors： Yang Shu1 2 Zhang Ning1 Qi Chang1 2 Ying Liang1

Unit： 1.School of Mechanical Engineering Dalian University of Technology 2.Ningbo Institute of Dalian University of Technology

KeyWords： unidirectional thermoplastic glass fiber metal laminates bulging test hot stamping temperature forming speed formability

ClassificationCode：TB333

year,vol(issue):pagenumber：2024,49(8):38-46

Abstract：

In order to study the thermoforming properties unidirectional thermoplastic glass fiber metal laminates (UTG/FMLs) of 2/1 of type, the influence laws of temperature and forming speed on the thermoforming properties of UTG/FMLS were studied by the bulging test based on the hot stamping process, and the forming mechanism was analyzed. The results show that increasing the temperature can decrease the overall strength of UTG/FMLs and improve the coordinated deformation ability of heterogeneous layers, thus affecting the thermoforming properties. The temperature range of 160-200 ℃ can achieve the ideal coordinated deformation between the heterogeneous layers of FMLs and improve the forming quality. However, the forming speed does not affect the initial mechanical properties of UTG/FMLs, but changes the force distribution during its forming process and affects the surface quality and the interlayer bonding properties of formed parts. The lower forming speed helps to restrain the defects of formed parts. Finally, the effectiveness of the method is verified based on the hot stamping test of typical hyperbolic complex curved parts, and the optimum forming temperature is 180 ℃ and the forming speed is 3 mm·s-1.

Funds：

国家重点研发计划项目（2022YFB2503503）；国家自然科学基金资助项目（52375310）

作者简介：杨姝（1978-），女，博士，副教授 E-mail：yangshu@dlut.edu.cn 通信作者：盈亮（1983-），男，博士，副教授 E-mail：yingliang@dlut.edu.cn

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