1100铝合金阵列槽微压印工艺及性能研究

发布时间：2018-04-25 12:39

  本文选题：1100铝合金 + 轧制　； 参考：《南京理工大学》2016年硕士论文

【摘要】：随着社会的发展,对产品的功能需要日益提高。而微型传感器和作动器的高度集成得到的智能结构件,是诸多旨在提高资源利用率,产品安全和性能的关键所在。本文以1100铝合金为材料,采用室温微压印成形的方式,制备含阵列槽的基板(智能金属板基体),并通过改变不同成形工艺对阵列槽的成形状况、微观组织变化及力学性能进行探究。本文主要结论如下：模拟实验与实物实验表明能够成功成形阵列槽(含14个主沟槽0.3×0.35mm,2个次沟槽0.7×0.35mm)。阵列槽成形效果比较理想的工艺是：板坯预热处理温度315℃、保温8h,轧制压下量为30%,模具与轧制方向夹角为45°,压印速度为25mm/min,模具抛光且挤压过程中使用润滑油,保压时间为0s。轧制态铝合金薄板表层主要出现剪切织构和立方织构,经过S取向到Copper-R取向,力学性能存在平面各向异性。微挤压过程中,材料性能的各向异性对挤压成形存在影响,凸模沟槽与轧制方向垂直时,有利于成形；随着轧制压下量的增大,阵列槽力学性能(硬度指标)增大,且增大趋势变缓；摩擦条件对阵列槽沟槽尺寸精度影响最为显著。因此,选用合适的模具抛光手段和润滑剂,对提高产品尺寸精度有着重要的作用；沟槽表面粗糙度被测定为最小可低至Ra=0.98μm,表面质量较高,光滑度足够满足后续需求,各工艺参数对其影响均较小。
[Abstract]:With the development of society, the function of the product needs to be improved day by day. The intelligent structure, which is highly integrated with micro sensors and actuators, is the key to improve resource utilization, product safety and performance. In this paper, 1100 aluminum alloy was used as the material, and the substrate (intelligent metal plate) containing the array groove was prepared by room temperature microembossing, and the forming condition of the array groove was changed by changing the different forming process. The changes of microstructure and mechanical properties were investigated. The main conclusions of this paper are as follows: simulation and physical experiments show that the array grooves (including 14 main grooves 0.3 脳 0.35 mm and 2 secondary grooves 0.7 脳 0.35 mm) can be successfully formed. The ideal forming process of array groove is as follows: slab preheating temperature 315 鈩，

本文编号：1801378