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| 颗粒增强复合钎料钎焊TiAl合金接头界面结构及性能 | |
| 引用本文： | 宋晓国,曹健,陈海燕,司国栋,冯吉才.颗粒增强复合钎料钎焊TiAl合金接头界面结构及性能[J].焊接学报,2013,34(7):13-16. |
| 作者姓名： | 宋晓国 曹健 陈海燕 司国栋 冯吉才 |
| 作者单位： | 1. 哈尔滨工业大学(威海)山东省特种焊接技术重点实验室,威海264209;哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨150001 2. 哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨,150001 3. 哈尔滨工业大学(威海)山东省特种焊接技术重点实验室,威海,264209 |
| 基金项目： | 973国家重点基础研究发展计划资助项目，哈尔滨工业大学(威海)校科研基金资助项目(HIT，中国博士后科学基金资助项目 |
| 摘 要： | 采用纳米Si3N4颗粒增强的AgCuTi复合钎料(AgCuTiC)实现了TiAl合金的钎焊连接.利用SEM,EDS及XRD等分析方法确定了TiAl/AgCuTiC/TiAl接头的典型界面结构为TiAl/AlCu2Ti/Ag(s,s)+TiN+ Al4Cu9+Ti5Si3.结果表明,钎焊过程中从TiAl母材溶入液相钎料的活性钛与复合钎料中纳米Si3N4颗粒发生反应,在钎缝中形成了细小的颗粒状TiN,Ti5Si3及Al4Cu9化合物增强的银基复合材料组织.银基复合材料的形成不仅提高了钎缝自身的强度,而且通过降低钎缝的线膨胀系数缓解了接头残余应力,并最终改善了钎焊接头的性能.当采用增强相含量为3％的AgCuTiC钎料在880℃保温5min条件下钎焊时,接头室温平均抗剪强度最高为278 MPa,比采用AgCuTi钎料提高40％. |
| 关 键 词： | TiAl合金 钎焊 复合钎料 界面组织 |
| 收稿时间： | 2012/7/4 0:00:00 |
Interfacial microstructure and properties of TiAl joints brazed with composite filler reinforced by particles |
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| SONG Xiaoguo,CAO Jian,CHEN Haiyan,SI Guodong and FENG Jicai.Interfacial microstructure and properties of TiAl joints brazed with composite filler reinforced by particles[J].Transactions of The China Welding Institution,2013,34(7):13-16. | |
| Authors: | SONG Xiaoguo CAO Jian CHEN Haiyan SI Guodong and FENG Jicai |
| Affiliation: | Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at WeiHai, WeiHai 264209, China;State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China,Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at WeiHai, WeiHai 264209, China;State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China,Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at WeiHai, WeiHai 264209, China and Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at WeiHai, WeiHai 264209, China;State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China |
| Abstract: | |
| Keywords: | TiAl alloy brazing composite filler interfacial microstructure |
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