| 钎焊方法制备Ti/TiAl/Al系变密度功能梯度材料 |
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| 引用本文： | 陈波,熊华平,沈强,王传彬,李俊国.钎焊方法制备Ti/TiAl/Al系变密度功能梯度材料[J].材料工程,2011(2):56-59. |
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| 作者姓名： | 陈波 熊华平 沈强 王传彬 李俊国 |
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| 作者单位： | 陈波,熊华平,CHEN Bo,XIONG Hua-ping(北京航空材料研究院,焊接及锻压工艺研究室,北京,100095);沈强,王传彬,李俊国,SHEN Qiang,WANG Chuan-bin,LI Jun-guo(武汉理工大学,材料复合新技术国家重点实验室,武汉,430070) |
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| 摘 要： | 采用两步钎焊方法来完成梯度材料的制备:第一步,选用Ti-Zr-Cu-Ni-Co急冷态箔带钎料钎焊TC4/TiAl接头,钎焊规范选为960℃/10min;第二步,采用高纯度的Al,Cu和Si粉末混合配制Al-25Cu-5Si钎料,用于钎焊TiAl/LF21接头,钎焊规范选为590℃/10min.结果表明,两步钎焊法成功实...
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| 关 键 词： | 钎焊 Ti/TiAl/Al 密度 梯度材料 |
Preparation of Ti/TiAl/Al System Graded Material with a Density Gradient by Brazing Method |
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| CHEN Bo,XIONG Hua-ping,SHEN Qiang,WANG Chuan-bin,LI Jun-guo.Preparation of Ti/TiAl/Al System Graded Material with a Density Gradient by Brazing Method[J].Journal of Materials Engineering,2011(2):56-59. |
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| Authors: | CHEN Bo XIONG Hua-ping SHEN Qiang WANG Chuan-bin LI Jun-guo |
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| Affiliation: | 1 Lab of Welding and Forging,Beijing Institute of Aeronautical Materials,Beijing 100095,China;2 State Key Lab of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China) |
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| Abstract: | The Ti/TiAl/Al system functionally graded material was fabricated with two-step brazing method.Firstly,the vacuum brazing of TC4 to TiAl was carried out using Ti-Zr-Cu-Ni-Co brazing filler at 960℃ for 10min.Secondly,with pure-metal powder of Al-25Cu-5Si,the joint of TiAl/LF21 was brazed at 590℃ for 10min.As a consequence,a thin diffusion layer near TiAl base metal was formed in TC4/TiAl joint.In particular,the transient phases of Ti3Al and Ti2Al were found to be formed within the 50μm-thickness brazing seam in the TC4/TiAl joint.The density of TC4/TiAl/LF21 FGM changes quasi-continuously from 4.5g/cm3 to 3.8g/cm3 and to 2.7g/cm3 in its thickness direction. |
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| Keywords: | Ti/TiAl/Al |
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