高温时效对TA1/TC4钎焊接头组织与性能的影响研究

doi:10.3901/JME.2024.14.109

机械工程学报 ›› 2024, Vol. 60 ›› Issue (14): 109-116.doi: 10.3901/JME.2024.14.109

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高温时效对TA1/TC4钎焊接头组织与性能的影响研究

高德君¹, 武绍旺², 杨生旭², 张承浩¹, 周龙¹, 司晓庆¹, 李淳¹, 亓钧雷¹, 曹健¹

1. 哈尔滨工业大学先进焊接与连接国家重点实验室哈尔滨 150001;
2. 西安航天发动机有限公司西安 710100

收稿日期:2023-06-20 修回日期:2024-02-25 出版日期:2024-07-20 发布日期:2024-08-29
作者简介:高德君,男,1993年出生,博士研究生。主要研究方向为钎焊。E-mail:16b909087@hit.edu.cn;司晓庆(通信作者),男,1989年出生,博士,副研究员,硕士研究生导师。主要研究方向为陶瓷/金属钎焊/扩散焊,高温固态能源器件封接。发表论文30余篇。E-mail:sixq@hit.edu.cn
基金资助:
国家自然科学基金杰出青年基金(52125502)、国家自然科学基金青年科学基金(52005031)和黑龙江省“头雁”团队经费(HITTY-20190013)资助项目。

Study on the Influences of High Temperature Treatment on the Interfacial Microstructure and Mechanical Properties of TA1/TC4 Brazed Joints

GAO Dejun¹, WU Shaowang², YANG Shengxu², ZHANG Chenghao¹, ZHOU Long¹, SI Xiaoqing¹, LI Chun¹, QI Junlei¹, CAO Jian¹

1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001;
2. Xi'an Space Engine Company Limited, Xi'an 710100

Received:2023-06-20 Revised:2024-02-25 Online:2024-07-20 Published:2024-08-29

摘要/Abstract

摘要： 试验采用Ti51ZrNiCu钎料，实现了TA1/TC4异种钛合金的真空钎焊连接，使用扫描电子显微镜(Scanning electron microscope, SEM)、能谱分析仪(Energy dispersive spectrometer, EDS)及X射线衍射仪(X-ray diffraction XRD)等分析方法研究了焊接接头的界面组织，分别研究了钎焊与高温时效过程，明确了两个阶段对接头组织与性能的影响，并总结了焊接工艺参数及焊后高温时效处理对组织结构的影响规律。结果表明，TA1/Ti51ZrNiCu/TC4接头的典型界面组织结构为：TAl/α-Ti+β-Ti+(Ti,Zr)₂(Ni,Cu)/TC4，其中焊接参数对接头界面组织的影响较小，试验具有较宽的工艺窗口，而高温时效处理对界面组织及力学性能具有较大影响，即高温时效消除焊后脆性组织是获得高质量接头的关键。高温时效处理后，(Ti,Zr)₂(Ni,Cu)化合物含量降低，界面组织更加均匀，力学性能显著提高且具有更好的稳定性，在935 ℃/3 min焊接参数下，高温时效处理120 min后，获得最大抗拉强度为319 MPa的钎焊接头。

关键词: TC4合金, TA1合金, TiZrNiCu钎料, 真空钎焊, 高温时效

Abstract: Ti51ZrNiCu filler alloy was used to vacuum braze TA1 alloy and TC4 alloy successfully. The interfacial microstructure of brazed joints was studied by scanning electron microscope(SEM), energy dispersive spectrometer(EDS) and X-ray diffraction(XRD). The processes of brazing and high temperature treatment are researched respectively to illustrate the impact on interfacial microstructure and mechanical property. And the influences of brazing parameters and high temperature treatment on interfacial microstructure were summarized. The results showed the typical interfacial microstructure of TA1/TC4 joints was TAl/α-Ti+β-Ti+(Ti,Zr)₂(Ni,Cu)/TC4. Brazing parameters had less influences on the interfacial microstructure, which meant wider process window. Compared to brazing parameters, high temperature treatment had more influences on the interfacial microstructure, which is critical factor. After high temperature treatment, the (Ti,Zr)₂(Ni,Cu) phase reduced, which lead to the more uniform microstructure, higher and more stable mechanical property. The highest tensile strength of brazed joints was 319 MPa, which were obtained at 935 ℃ for 3 min and high temperature treatment for 120 min.

Key words: TA1 alloy, TC4 alloy, TiZrNiCu filler alloy, vacuum brazing, high temperature treatment

中图分类号:

TG454

高德君, 武绍旺, 杨生旭, 张承浩, 周龙, 司晓庆, 李淳, 亓钧雷, 曹健. 高温时效对TA1/TC4钎焊接头组织与性能的影响研究[J]. 机械工程学报, 2024, 60(14): 109-116.

GAO Dejun, WU Shaowang, YANG Shengxu, ZHANG Chenghao, ZHOU Long, SI Xiaoqing, LI Chun, QI Junlei, CAO Jian. Study on the Influences of High Temperature Treatment on the Interfacial Microstructure and Mechanical Properties of TA1/TC4 Brazed Joints[J]. Journal of Mechanical Engineering, 2024, 60(14): 109-116.

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高温时效对TA1/TC4钎焊接头组织与性能的影响研究

Study on the Influences of High Temperature Treatment on the Interfacial Microstructure and Mechanical Properties of TA1/TC4 Brazed Joints

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