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Ti/Cu异种金属电子束焊接界面行为

郭顺, 罗添元, 彭勇, 周琦, 朱军

郭顺, 罗添元, 彭勇, 周琦, 朱军. Ti/Cu异种金属电子束焊接界面行为[J]. 焊接学报, 2019, 40(8): 26-32. DOI: 10.12073/j.hjxb.2019400204
引用本文: 郭顺, 罗添元, 彭勇, 周琦, 朱军. Ti/Cu异种金属电子束焊接界面行为[J]. 焊接学报, 2019, 40(8): 26-32. DOI: 10.12073/j.hjxb.2019400204
GUO Shun, LUO Tianyuan, PENG Yong, ZHOU Qi, ZHU Jun. Interface behavior and mechanical properties of Ti/Cu dissimilar metals welding by electron beam[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(8): 26-32. DOI: 10.12073/j.hjxb.2019400204
Citation: GUO Shun, LUO Tianyuan, PENG Yong, ZHOU Qi, ZHU Jun. Interface behavior and mechanical properties of Ti/Cu dissimilar metals welding by electron beam[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(8): 26-32. DOI: 10.12073/j.hjxb.2019400204

Ti/Cu异种金属电子束焊接界面行为

基金项目: 国家自然科学基金资助项目(51805265,51505226)

Interface behavior and mechanical properties of Ti/Cu dissimilar metals welding by electron beam

  • 摘要: 为了获得高强度T2铜和Ti-6Al-4V钛合金异种金属接头,采用电子束焊方法开展试验,并对接头界面组织及力学性能进行了分析.试验在钛/铜熔钎焊接基础上,通过在高熔点钛侧复合二次焊接,构建钛/铜结合界面金属间化合物层的重熔温度场,进而实现钛/铜金属间化合物层的重熔改性.通过有限元温度场模拟及SEM,XRD等检测.结果表明,钛侧重熔焊接可在结合界面处形成1 000℃左右高温,金属间化合物层发生局域重熔.在随后凝固过程中,由于散热方向及元素再分配,相的形成顺序发生改变,钛原子向铜侧的扩散距离减短,高硬度相TiCu向Ti2Cu转变,相结构优化,最终接头强度得以提升.
    Abstract: In order to obtain high-strength dissimilar metals joints of T2 copper and Ti-6Al-4V titanium alloy, electron beam welding was used to carry out experiments, and the interfacial microstructure and mechanical properties of the joints were analyzed. Based on the Ti/Cu welding-brazing process, the remelting temperature field of intermetallic compounds layer at the Ti/Cu bonding interface was constructed by secondary composite welding on the Ti side of high melting point, and then the remelting modification of Ti/Cu intermetallic compounds layer was realized. By temperature field simulation of FEM and detection of SEM, XRD, the results shown that a high temperature of about 1 000℃ at the interface was formed by remelting welding at titanium side, leading to local remelting of intermetallic compound layer. In the process of solidification, due to the direction of heat dissipation and the redistribution of elements, the formation sequence of the phase was changed, the diffusion distance of titanium atoms was reduced and TiCu with high hardness was transformed to Ti2Cu. The phase structure was optimized and finally the strength of the welded joints improved.
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  • 期刊类型引用(3)

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    2. 黄炎,李健朋,吴其. 正交异性钢桥面横隔板弧形切口焊接残余应力分析. 焊接学报. 2019(08): 131-137+149+166-167 . 本站查看
    3. 许振波,钱骥. 钢桥U肋-顶板重焊过程残余应力研究. 热加工工艺. 2019(23): 134-139 . 百度学术

    其他类型引用(2)

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出版历程
  • 收稿日期:  2018-02-04

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