焊接学报 >

2022 , Vol. 43 >Issue 4: 81 - 85

DOI: https://doi.org/10.12073/j.hjxb.20211105002

研究论文

钛箔/钢爆炸焊接的界面结合性能

  • 毕志雄 ,
  • 李雪交 ,
  • 吴勇 ,
  • 熊苏 ,
  • 汪泉 ,
  • 荣凯
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  • 1. 安徽理工大学, 淮南, 232001;
    2. 安徽雷鸣科化股份有限公司, 淮北, 235000;
    3. 广州工程设计研究所, 广州, 510000
毕志雄，硕士研究生；主要从事含能材料开发与应用；Email: B905643354@163.com

收稿日期: 2021-11-05

  网络出版日期: 2022-07-14

基金资助

国家自然科学基金资助项目(11872002)；安徽省自然科学基金(1808085QA06)；安徽省博士后基金(2019B355).

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Interfacial bonding properties of titanium foil/steel explosive welding

  • BI Zhixiong ,
  • LI Xuejiao ,
  • WU Yong ,
  • XIONG Su ,
  • WANG Quan ,
  • RONG Kai
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  • 1. Anhui University of Science and Technology, Huainan, 232001, China;
    2. Anhui Leiming Kehua Co., Ltd., Huaibei, 235000, China;
    3. Guangzhou Engineering Design Institute, Guangzhou, 510000, China

Received date: 2021-11-05

  Online published: 2022-07-14

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摘要

为减小钛/钢爆炸焊接钛层的使用量，以低爆速乳化炸药作为焊接炸药，食盐作为传压层，成功实现厚度200 μm TA1钛箔与Q235钢的爆炸焊接.通过金相显微镜、扫描电镜和能谱仪对界面微观形貌进行分析，利用万能试验机对复合板试件进行拉伸、弯曲试验检测其结合性能. 结果表明，钛箔/钢界面呈规则的波形，主要以熔化层结合，具有良好的结合质量.靠近界面金属产生强烈的塑性变形，钢侧晶粒呈流线状.波后的旋涡内包含熔化块，未观测到孔洞、裂隙等缺陷.根据Ti和Fe元素原子比例，熔化块成分主要为FeTi，Fe2Ti等金属间化合物.三点弯曲和拉伸试件的界面均未出现分离，复合板材界面具有良好的塑性变形能力和结合性能.拉伸试件断口两侧的钛层与钢层存在大小不一的韧窝，主要呈塑性断裂.

关键词： 爆炸焊接; 传压层; 钛箔; 微观形貌; 结合性能

本文引用格式

毕志雄 , 李雪交 , 吴勇 , 熊苏 , 汪泉 , 荣凯 . 钛箔/钢爆炸焊接的界面结合性能[J]. 焊接学报, 2022 , 43(4) : 81 -85 . DOI: 10.12073/j.hjxb.20211105002

Abstract

To reduce titanium/steel explosive welding usage, the explosive welding between 200 μm thick TA1 titanium foil and Q235 steel was realized by using salt as a pressure transfer layer and low detonation velocity as a welding explosive. The microstructures at the interface were analyzed by metallographic microscope, scanning electron microscope and energy dispersive spectroscopy. Tensile and bending tests were carried out by a universal testing machine to test the bonding properties of the clad plate. The results show that the titanium foil/steel interface shows a regular waveform and is mainly bonded by the melting layer, which has good bonding quality. The metal near the interface produces strong plastic deformation, and the steel grains are linear. The vortex of the wave peak contains a melting block, and no holes or cracks are observed. According to the atomic ratio of Ti and Fe elements, the main components of melting block are FeTi and Fe2Ti intermetallic compounds. The bonding interface did not separate when the three-point bending and tensile specimens were destroyed, which indicates that the clad plate has good plastic deformation ability and bonding performance. There are dimples of different sizes in the titanium and steel layers of tensile failure specimens, mainly plastic fractures.

Key words： explosive welding; pressure transfer layer; titanium foil; microtopography; bonding performance

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