激光间接冲击下钛箔的微成形特性

王霄; 邱唐标; 顾宇轩; 张迪; 马友娟; 刘会霞

doi:10.3788/OPE.20152303.0632

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激光间接冲击下钛箔的微成形特性

现代应用光学 | 更新时间：2020-08-13

- 激光间接冲击下钛箔的微成形特性
- Micro-forming properties of Ti foil under laser indirect shock
- 光学精密工程 2015年23卷第3期页码：632-638
- 作者机构：
  
  江苏大学机械工程学院,江苏镇江,212013
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(No.51175235)();江苏省自然科学基金资助项目(No.BK2012712)();江苏省高校自然科学基金资助项目(No.13KJB46
- DOI：10.3788/OPE.20152303.0632
  中图分类号： TG665;TN249
- 收稿日期：2014-10-21，
  
  修回日期：2014-11-14，
  
  纸质出版日期：2015-03-25
- 稿件说明：
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王霄, 邱唐标, 顾宇轩等. 激光间接冲击下钛箔的微成形特性[J]. 光学精密工程, 2015,23(3): 632-638

WANG Xiao, QIU Tang-biao, GU Yu-xuan etc. Micro-forming properties of Ti foil under laser indirect shock[J]. Editorial Office of Optics and Precision Engineering, 2015,23(3): 632-638
王霄, 邱唐标, 顾宇轩等. 激光间接冲击下钛箔的微成形特性[J]. 光学精密工程, 2015,23(3): 632-638 DOI： 10.3788/OPE.20152303.0632.

WANG Xiao, QIU Tang-biao, GU Yu-xuan etc. Micro-forming properties of Ti foil under laser indirect shock[J]. Editorial Office of Optics and Precision Engineering, 2015,23(3): 632-638 DOI： 10.3788/OPE.20152303.0632.

摘要

采用具有高应变率加载特征的激光驱动飞片间接冲击微成形技术对钛箔进行了微成形实验

以解决难成形材料的微塑性成形问题。从飞片完整性、工件贴模性以及厚度减薄率等方面探究了该工艺的成形性能。实验中采用微细电火花和曲面研磨技术制造微模具

材料为AISI 1090模具钢

飞片为20 μm的钛箔

成形工件为35 μm的钛箔。通过KEYENCE VHX-1000C超景深显微系统对飞片和工件进行了观测和分析

结果显示:飞片具有较好的完整性

能够提供均匀的冲击压力;成形后的工件具有良好的表面质量和贴模性。借助冷镶嵌工艺测量了工件的厚度分布

分析了工件厚度减薄率

其最大值为19.8%

最小值为2%

显示工件的厚度分布比较均匀。研究表明:激光间接冲击微成形技术对于难成形材料具有良好的成形效果并且能有效抑制厚度减薄。

Abstract

The micro-forming experiments of Ti foils were performed under a laser driven flyer indirect shock with high strain load features to overcome the micro-forming problems of difficult deformed materials. The forming properties of Ti foils under the laser indirect shock were explored from three aspects

the integrity of flyer

the fitability and the ratio of thickness to thinning of workpieces. In this experiment

the mold was fabricated by micro Electrical Discharge Machining (micro-EDM) and curved surface grinding. AISI 1090 die steel was used as the material of mold. The Ti foils with the thickness of 20 μm were employed as flyers. Furthermore

Ti foils with the thickness of 35 μm were used as workpieces. The flyers and workpieces were observed under a KEYENCE VHX-1000C digital microscope. The results indicate that the flyers show good integrity and provides a uniform shock pressure

so that the workpieces with good surface quality and fitability are fabricated. The cold-mounted technique was used to characterize the thicknesses of workpieces and to discuss the ratio of thickness to thinning

which shows that the maximum thinning rate is 19.8% and the minimum thinning rate is 2%.The results demonstrate that the workpieces have uniform thickness distribution. The laser indirect shock micro-forming technique has good forming properties on difficult deformed materials and reduces the thickness thinning effectively.

关键词

Keywords

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