Process Characteristics of Laser Direct Joining of PEEK to Aluminum Alloy

XIA Peiyun; MENG Yao; SHEN Haoran; Lü Hongya; DIAO Lei; FENG Xiaosong; WANG Chunming; YIN Yuhuan

doi:10.16080/j.issn1671-833x.2021.12.030

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Process Characteristics of Laser Direct Joining of PEEK to Aluminum Alloy

更新时间：2025-10-30

- Process Characteristics of Laser Direct Joining of PEEK to Aluminum Alloy
- Aeronautical Manufacturing Technology Vol. 64, Issue 12, Pages: 30-35(2021)
- 作者机构：
  
  1. 华中科技大学材料成形与模具技术国家重点实验室,武汉,430074
  2. 上海航天设备制造总厂有限公司国防科技工业特种焊接技术创新中心,上海,200245
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2021.12.030
  CLC：
- Published：2021
- 稿件说明：
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夏佩云，孟遥，沈浩然，吕红亚，刁磊，封小松，王春明，尹玉环. 铝合金 - 聚醚醚酮异种材料激光连接工艺特性[J]. 航空制造技术, 2021, 64(12): 30-35/46.

XIA Peiyun, MENG Yao,SHEN Haoran,Lü Hongya,DIAO Lei,FENG Xiaosong,WANG Chunming,YIN Yuhuan. Process Characteristics of Laser Direct Joining of PEEK to Aluminum Alloy. 航空制造技术, 2021, 64(12): 30-35/46.
夏佩云，孟遥，沈浩然，吕红亚，刁磊，封小松，王春明，尹玉环. 铝合金 - 聚醚醚酮异种材料激光连接工艺特性[J]. 航空制造技术, 2021, 64(12): 30-35/46. DOI： 10.16080/j.issn1671-833x.2021.12.030.

XIA Peiyun, MENG Yao,SHEN Haoran,Lü Hongya,DIAO Lei,FENG Xiaosong,WANG Chunming,YIN Yuhuan. Process Characteristics of Laser Direct Joining of PEEK to Aluminum Alloy. 航空制造技术, 2021, 64(12): 30-35/46. DOI： 10.16080/j.issn1671-833x.2021.12.030.

摘要

采用激光连接技术实现了 2mm 厚 2195 铝锂合金与 3mm 厚聚醚醚酮（PEEK）搭接，对比分析了铝合金焊前表面未处理与磷酸阳极氧化处理两种情况，不同工艺参数条件下接头外观成形、连接界面的微观形貌以及抗拉剪切破坏力情况。结果表明，2195–PEEK 异质接头的 PEEK 一侧可见“弧形”熔融区，对于表面磷酸阳极氧化处理的接头，该线形包络内可见大量尺寸不一的微小气孔，连接界面原始间隙消除形成有效连接；磷酸阳极氧化处理可显著提升接头结合强度，在激光功率 1400W、扫描速度 3mm/s 时，可达到最大抗拉剪切破坏力 4479N（PEEK 试片宽度 30mm），失效位置位于 PEEK 一侧，界面未被破坏；磷酸阳极氧化处理 2195–PEEK 激光直连接头界面形成了 4μm 厚度的过渡层，过渡层的厚度与磷酸阳极氧化膜厚度基本一致，Al、C 元素浓度形成渐变过渡，推测该过渡层内形成 “Al–O–PEEK”化学键，这是提高接头连接强度的重要原因。

Abstract

2mm-thick aluminum alloy 2195 with phosphate anodizing pretreated and no pretreatment were joined to 3mm-thick PEEK (Poly ether-ether-ketone) by laser direct joining process

the differences of joint appearance

microstructure of interface and tensile shear force were analyzed under different process parameters. The results show that Al-PEEK dissimilar joint has an arc shaped melted zone in side of PEEK. Compared to Al-PEEK joints without pretreatment

there are dispersed pores with different size in melted zone but no visible gap at interface for anodized AlPEEK dissimilar joints. Anodizing pretreatment could remarkably strengthen Al-PEEK dissimilar joints. The maximum tensile shear force could reached 4479N (PEEK with width of 30mm)

when laser power at 1400W

welding speed at 3mm/s

while failure position is in PEEK with interface not separated. There is a transition layer between Al and PEEK about thickness of 4μm

the same with anodizing film. In this transition layer

it is speculated that chemical bonding of “Al-O-PEEK” may be formed

according to the variation trend of element Al and O concentration

which is the main reason for improving the joints strength.

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