| 高铌TiAl合金钎焊接头组织和性能研究 |
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| 引用本文： | 宋晓国,司晓庆,曹健,王志权,赵洪运,冯吉才.高铌TiAl合金钎焊接头组织和性能研究[J].稀有金属材料与工程,2018,47(1):52-58. |
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| 作者姓名： | 宋晓国 司晓庆 曹健 王志权 赵洪运 冯吉才 |
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| 作者单位： | 哈尔滨工业大学,哈尔滨工业大学,哈尔滨工业大学,哈尔滨工业大学,哈尔滨工业大学,哈尔滨工业大学 |
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| 摘 要： | 采用Ti-28Ni(wt.%)共晶钎料在1100℃实现了高铌TiAl合金(Ti-45Al-8.5Nb-(W, B, Y) (at.%), 简称TAN)的真空钎焊连接。钎焊接头的典型界面结构为TAN/τ3-Al3Ti2Ni + B2/α2-Ti3Al layer/α2-Ti3Al + δ-Ti2Ni/α2-Ti3Al layer/τ3-Al3Ti2Ni + B2/TAN。深入研究了保温时间对钎焊接头界面组织和连接性能的影响。结果表明：Ni元素从熔融钎料向TAN母材的扩散决定了界面组织的演化，随着保温时间的延长促进了扩散层的增厚，同时导致钎缝宽度逐渐减小。接头剪切强度测试结果显示当保温时间为15分钟时，获得的最大接头室温剪切强度和高温(600℃)剪切强度分别是248.6MPa和166.4MPa。接头断口分析表明在剪切实验中裂纹主要沿着连续的金属间化合物层产生和扩展。
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| 关 键 词： | TiAl金属间化合物 真空钎焊 界面组织 力学性能 断口 |
| 收稿时间： | 2016/11/23 0:00:00 |
| 修稿时间： | 2016/11/23 0:00:00 |
An investigation on microstructure and joining properties of high Nb-containing TiAl alloy brazed joints |
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| X.G. Song,X.Q. Si,J. Cao,Z.Q. Wang,H.Y. Zhao and J.C. Feng.An investigation on microstructure and joining properties of high Nb-containing TiAl alloy brazed joints[J].Rare Metal Materials and Engineering,2018,47(1):52-58. |
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| Authors: | XG Song XQ Si J Cao ZQ Wang HY Zhao and JC Feng |
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| Affiliation: | State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology |
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| Abstract: | |
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| Keywords: | TiAl intermetallic Brazing Microstructure Mechanical properties Fracture |
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