Transactions of Materials and Heat Treatment

Title：Hydro-formability and scale effect of TA1/CFRP fuel cell bipolar plate microchannels

Authors： Wang Yao1 2 3 4 Guo Hong1 Ye Xiaokai1 Zheng Sifa3 Zhao Libin1 4 Hu Ning1 2 4

Unit： 1. School of Mechanical Engineering Hebei University of Technology 2. State Key Laboratory of Reliability and Intelligence Electrical Equipment Hebei University of Technology 3. Suzhou Automotive Research Institute (Xiangcheng) Tsinghua University 4. Key Laboratory of Hebei Province on Scale-span Intelligent Equipment Technology

KeyWords： ultra-thin TA1/CFRP laminates hydroforming scale effect bipolar plate microchannel out of plane bending

ClassificationCode：TB333

year,vol(issue):pagenumber：2023,48(5):16-24

Abstract：

Different types of microscale TA1/CFRP laminates were prepared using TA1 titanium alloy and carbon fiber prepreg as raw materials. Through hydroforming experiments, the effects of key processes and structural parameters on the formability of microchannel for TA1/CFRP laminates were studied, and the geometric and frictional scale effects of laminates in hydroforming were explored. The results show that by changing the loading path of liquid chamber, it is found that the laminates are filled in the order of rounded corner, bottom and side wall in the channel. This has a certain reference value for the design of channel structure. Increasing the width of channel within a certain range can improve the formability of laminates. Laminates exhibit significant scale effects during the forming process, resulting in out of plane bending phenomenon. By increasing the thickness of metal layer and changing the forming friction state, this out of plane bending phenomenon can be weakened, and the formability and quality of laminates can be improved.

Funds：

国家自然科学基金资助项目 (52005153)；中国博士后科学基金资助项目 (2022T150372，2021M701962)；中央引导地方科技发展项目(206Z1803G)；天津市“项目+团队”重点培养专项(XC202052)

作者简介：王耀 (1986-)，男，博士，副教授，E-mail：bhwy2014@126.com

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