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在300℃退火1 h热处理条件下，采用厚度为50μm的铝-铜复合薄板开展微深冲成形工艺研究。研究使用由二氧化钛(TiO2)纳米颗粒与甘油混合形成的不同配比的纳米润滑剂作为润滑变量，并针对铝-铜复合薄板在微深冲工艺中的成形性能和摩擦学特性进行探究。结果表明，在TiO2纳米润滑条件下，微深冲成形力显著降低，其中，1.0wt%浓度的TiO2纳米润滑剂在降低成形摩擦和提高深冲极限方面表现最佳。同时实验发现，适量的纳米颗粒通过修复机制可以改善微深冲件的表面质量。此外，微观组织观察结果表明，纳米颗粒多聚集在微深冲件表面微形貌中的开放润滑(OLPs)区域，有助于在成形过程中进一步降低摩擦力。
Abstract：Aluminum-copper(Al-Cu) composite thin sheet with thickness of 50 μm under the heat treatment condition of annealing at 300 ℃ for 1 h was employed to conduct micro deep drawing(MDD) research. The nano-lubricants mixed by TiO2 nano-particles and glycerol with different compositions were applied to act as the lubrication variables in the tests and the forming performance and tribological characteristics of Al-Cu composite thin sheet in MDD were investigated. The results show that the MDD forming force significantly decreases under TiO2 nano-lubrication condition, TiO2 nano-lubricant with concentration of 1.0wt% confirms the best performance in friction reduction and improvement of deep drawing limit. It is found that the surface quality of the MDD components can be improved when appropriate quantity of nanoparticles are applied due to the observed mending mechanism. In addition, microstructure observation results show that the existence of nanoparticles at the open lubricant pockets(OLPs) region is helpful to reduce the friction force during the forming process.
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基本信息:
中图分类号:TG386
引用信息:
[1]贾方辉,韩非,姜正义.基于纳米润滑条件的铝-铜复合薄板微深冲摩擦学行为研究[J].塑性工程学报,2026,33(08):70-79.
2026-08-21
2026-08-21
2026-08-21