| TC1钛合金蜂窝夹层结构的钎焊工艺研究与分析 |
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| 引用本文： | 静永娟,李晓红,岳喜山.TC1钛合金蜂窝夹层结构的钎焊工艺研究与分析[J].航空制造技术,2012(13):137-139,152. |
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| 作者姓名： | 静永娟 李晓红 岳喜山 |
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| 作者单位： | 中航工业北京航空制造工程研究所 |
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| 摘 要： | 研究了TC1钛合金蜂窝夹层结构试件的钎焊工艺,通过对系列工艺下钎焊界面组织进行观察得出,在930℃/保温15min和一定钎料添加量的条件下,界面析出了TiNi2(Cu,Zr)化合物,且尺寸细小、分布弥散,因而相应钎焊试件的室温拉脱强度平均值较高,可达17MPa。在钎焊过程中,Cu和Ni元素由钎料向母材扩散,使母材β相变温度降低,导致界面魏氏体组织的产生;芯体波纹带间受钎料熔化热影响较大,导致此处魏氏体组织粗大,成为试件的薄弱部位。
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| 关 键 词： | 钛合金 蜂窝夹层结构 钎焊 |
Research and Analysis of Processing Parameter for Brazing Honeycomb Sandwich Construction in Titanium Alloy |
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| Abstract: | Processing parameter for brazing honeycomb sandwich construction in titanium alloy is studied. The microstructure and the strength of the welded interface are observed and tested. The fine and dispersing TiNi 2 (Cu,Zr)-compound is found by TEM in the interface, which is benefit for the strength of the brazing welded samples. The sample strength is up to 20MPa. The Wid-manstaten structure in the interface is caused by β phase transition temperature decreasing, which induces by Ni and Cu elements diffusing from brazing filler to matrix. And the honeycomb core is the weak link because of the rough Widmanstaten structure. |
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| Keywords: | Titanium alloy Honeycomb sandwich construction Brazing |
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