TiAl/IN718合金过渡液相连接

段辉平; 罗俊; 张涛; Mustafa Koca

TiAl/IN718合金过渡液相连接

1.
北京航空航天大学材料科学与工程学院北京 100083
2. GKSS研究中心,格斯达赫特 D21502

详细信息

作者简介:
段辉平(1966-),男,湖南资兴人,副教授,hpduan@buaa.edu.cn.

中图分类号: TH 1312
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- 被引次数: 0
出版历程
- 收稿日期: 2004-04-16
- 网络出版日期: 2004-10-31

Transient liquid phase bonding of TiAl and Inconel 718

1.
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2. GKSS Research Center Geesthacht, Geesthacht D21502, Germany

摘要

摘要: 采用过渡液相TLP(Transient Liquid Phase)连接技术,以金属Ti,Cu,Ni箔构成复合焊料连接TiAl和IN718合金.研究了保温时间对接头界面结构的影响.实验结果表明:采用Ti-Cu,Ti-Ni复合焊料可以制备无缺陷的接头,但2种焊料形成液相的过程和机理不同.由于在等温凝固过程中,从IN718合金中扩散过来的合金元素可在焊缝区聚集,从而在接头中形成亚层结构.通过对接头焊缝区的组织分析和硬度测试表明,在实验条件下Ti-Ni焊料的等温凝固过程持续时间比Ti-Cu的短.
- 连接 /
- 金属互化物 /
- 因可合金 /
- 过渡液相
Abstract: Ti foil combined with Cu or Ni foils was used as insert metals to join TiAl intermetallic and Inconel 718 employing transient liquid phase (TLP) bonding technique. The effect of dwell time at bonding temperature on the interfacial structures of the joints was investigated. Results showed that defect-free joints was fabricated, but the liquid formation processes and mechanism of Ti-Cu and Ti-Ni insert metals were quite different. Some sublayers were found in the joined zone because the alloyed elements which diffused from Inconel 718 alloy segregated at the interface between Inconel 718 alloy and joined zone. Morphologies and hardness profiles of the joined zones showed that the joint produced using Ti-Ni insert metals could isothermally solidify much faster than that produced using Ti-Cu insert metals under the experimental conditions.
- bonding /
- intermetallics components /
- Inconel /
- transient liquid phase

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参考文献(1)

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