| TC4-DT钛合金线性摩擦焊接头组织和力学性能分析 |
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| 引用本文： | 刘颖,张传臣,张田仓.TC4-DT钛合金线性摩擦焊接头组织和力学性能分析[J].航空制造技术,2017(22). |
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| 作者姓名： | 刘颖 张传臣 张田仓 |
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| 作者单位： | 中国航空制造技术研究院航空焊接与连接技术航空科技重点实验室,北京,100024 |
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| 摘 要： | 针对飞机用典型的TC4-DT钛合金线性摩擦焊接头,开展组织及接头的拉伸、冲击和低周疲劳等力学性能测试。结果表明:TC4-DT钛合金线性摩擦焊接头经过700℃+保温3h的热处理后,接头的室温和高温抗拉强度达到母材的97%以上,室温和低温冲击性能略高于母材,室温低周疲劳性能与母材相当,具有良好的综合力学性能。
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| 关 键 词： | TC4-DT钛合金 线性摩擦焊 力学性能 |
Microstructure and Mechanical Properties of LFW Joint for TC4-DT Titanium Alloy |
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| LIU Ying,ZHANG Chuanchen,ZHANG Tiancang.Microstructure and Mechanical Properties of LFW Joint for TC4-DT Titanium Alloy[J].Aeronautical Manufacturing Technology,2017(22). |
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| Authors: | LIU Ying ZHANG Chuanchen ZHANG Tiancang |
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| Abstract: | The Microstructure, tensile strength, impact property and low-cycle fatigue testing properties were studied for TC4-DT liner friction welded (LFW) joint of the aircraft. Test results show that an excellent properties of weld joint can be obtained after post-weld heat treatment (temperature: 700℃ , longtime: 3h). The room and high tensile strengths of TC4-DT LFW joint can reach more than 97% of TC4-DT base metals, and the impact property of the weld joint is slightly higher than the base metal, the low-cycle fatigue property is close to the TC4-DT base metals. |
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| Keywords: | TC4-DT titanium alloy Linear friction welding Mechanical property |
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