锻压技术

TA1/CFRP燃料电池双极板微流道充液成形性能及尺寸效应

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

作者：王耀1 2 3 4 郭宏1 叶晓凯1 郑四发3 赵丽滨1 4 胡宁1 2 4

单位：1. 河北工业大学机械工程学院 2. 河北工业大学电工装备可靠性与智能化国家重点实验室 3. 清华大学苏州汽车研究院(相城) 4. 河北省跨尺度智能装备技术重点实验室

分类号：TB333

出版年,卷(期):页码：2023,48(5):16-24

摘要：

以TA1钛合金和碳纤维预浸料为原材料，制备了不同类型的微尺度TA1/CFRP层板，并通过充液成形实验，研究了关键工艺及结构参数对TA1/CFRP层板微流道成形性能的影响，探究了层板在充液成形中的几何和摩擦尺寸效应。结果表明：通过改变液室加载路径发现，层板在流道内是以圆角、底部、侧壁的顺序填充，这对流道结构的设计具有一定的参考价值，在一定范围内增大流道宽度能够提高层板的成形性能。层板在成形过程中表现出明显的尺寸效应，从而产生面外弯曲现象，通过增加金属层厚度、改变成形摩擦状态均能弱化这种面外弯曲现象，提高层板的成形性能及质量。

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.

基金项目：

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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