Study on Test Method of Diffusion Bonding Interface Strength of Titanium Alloy Sheets

MA Tengyue; HAN Xiaoning; MA Xiaozhao; DENG Ying; HAN Xiuquan

doi:10.16080/j.issn1671-833x.2025.21.122

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Study on Test Method of Diffusion Bonding Interface Strength of Titanium Alloy Sheets

更新时间：2026-03-27

- Study on Test Method of Diffusion Bonding Interface Strength of Titanium Alloy Sheets
- Aeronautical Manufacturing Technology Issue 21, (2025)
- 作者机构：
  
  1. 中国航空制造技术研究院,北京,100024
  2. 塑性成形技术航空科技重点实验室,北京,100024
  3. 数字化塑性成形技术与装备北京市重点实验室,北京,100024
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2025.21.122
  CLC：
- Published：2025
- 稿件说明：
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MA Tengyue, HAN Xiaoning, MA Xiaozhao, et al. Study on Test Method of Diffusion Bonding Interface Strength of Titanium Alloy Sheets[J]. Aeronautical Manufacturing Technology, 2025, (21).
DOI：

MA Tengyue, HAN Xiaoning, MA Xiaozhao, et al. Study on Test Method of Diffusion Bonding Interface Strength of Titanium Alloy Sheets[J]. Aeronautical Manufacturing Technology, 2025, (21). DOI： 10.16080/j.issn1671-833x.2025.21.122.

摘要

针对薄板类构件扩散连接工艺中连接强度难以快速、准确测试的现状，提出了适用于薄板扩散连接界面法向连接强度的测试方案。通过TC4 材料的扩散连接单因素试验，获得了不同扩散连接质量的试件。测试结果表明，该试件的界面连接强度与焊合率呈正相关关系。断口分析显示，随着焊合率的提高，断口由平整向锥状转化，等轴型韧窝转化为剪切型韧窝，证明了本文方法与金相法评价的等效性。本文所提方法补充了扩散连接质量的评价体系，而且能直接表征大范围扩散连接界面的力学性能。

Abstract

In view of the difficulty of rapid and accurate test of bonding interface strength in the diffusion bonding process of sheet components

a test scheme for the normal bonding strength of diffusion bonding interface for sheet is proposed in this study. Specimens with different diffusion-bonding qualities are obtained through single-factor experiment of diffusion bonding of TC4 alloy. The test results show that interface bonding strength of TC4 alloy is positively correlated with the bonding rate. The fracture analysis demonstrates that with the increase of bonding rate

the fracture surface transforms from flat to conical and from axial dimple to shear dimple

which proves the equivalence between the proposed method and metallographic evaluation. The proposed method complements the evaluation system of diffusion bonding quality and can be used to directly characterize the mechanical properties of the wide-range diffusion bonding interfaces.

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Related Institution

AVIC Chengdu Aircraft Industrial (Group) Co., Ltd.

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Institute of Forming Technology & Equipment, School of Materials Science and Engineering, Shanghai Jiao Tong University

State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University

State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University

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