| DD3高温合金与Ti3AlC2陶瓷的真空钎焊 |
| |
| 引用本文： | 刘甲坤,亓钧雷,曹健,林兴涛,王志杰,冯吉才.DD3高温合金与Ti3AlC2陶瓷的真空钎焊[J].焊接学报,2014,35(3):41-44. |
| |
| 作者姓名： | 刘甲坤 亓钧雷 曹健 林兴涛 王志杰 冯吉才 |
| |
| 作者单位： | 1.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 |
| |
| 基金项目： | 国家自然科学基金资助项目(51021002,51275133) |
| |
| 摘 要： | 通过对比试验优选出了合适钎料,并进行了后续钎焊试验.在钎焊温度800~900℃,保温时间为10 min的条件下,采用Ag-Cu-Ti钎料实现了DD3镍基高温合金与Ti3AlC2陶瓷的真空钎焊连接.利用扫描电镜、能谱仪、XRD等对接头的界面结构进行了分析.结果表明,接头的典型界面结构为DD3/AlNi/Al3(Ni,Cu)5+Al(Ni,Cu)+Agss/(Al,Ti)3(Ni,Cu)5/Al4Cu9+AlNi2Ti+Agss/TiAg/Ti3AlC2.接头的力学性能测试表明,在钎焊温度为850℃,保温时间为10 min的条件下,接头的最高抗剪强度可达135.9 MPa,断裂发生在靠近钎缝的Ti3AlC2陶瓷侧.降低和提高钎焊温度对接头界面组织影响不大,但接头强度有一定程度下降.
|
| 关 键 词： | 高温合金 陶瓷 钎焊 界面结构 抗剪强度 |
| 收稿时间： | 2013/10/8 0:00:00 |
Study on vacuum brazing of DD3 Ni-base superalloy and Ti3AlC2 ceramic |
| |
| LIU Jiakun,QI Junlei,CAO Jian,LIN Xingtao,WANG Zhijie and FENG Jicai.Study on vacuum brazing of DD3 Ni-base superalloy and Ti3AlC2 ceramic[J].Transactions of The China Welding Institution,2014,35(3):41-44. |
| |
| Authors: | LIU Jiakun QI Junlei CAO Jian LIN Xingtao WANG Zhijie and FENG Jicai |
| |
| Affiliation: | 1.State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China2.Zhejiang Provincial Special Equipment Inspection and Research Institure, Hangzhou 310020, China3.Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China |
| |
| Abstract: | By comparison,an appropriate brazing filler metal was selected and applied to the follow-on experiments. DD3 Ni-base superalloy and Ti3AlC2 ceramic were successfully brazed in vacuum using Ag-Cu-Ti as filler metal in a temperature range of 800~900℃ for 10 min. The interfacial microstructure of the brazed joints was investigated by adopting scanning electron microscope,energy dispersive spectroscopy and X-ray diffraction. The result showed that the typical interfacial microstructure of the joints can be described as DD3/AlNi/Al3(Ni,Cu) 5+Al(Ni,Cu)+Agss/(Al,Ti)3(Ni,Cu)5/Al4Cu9+AlNi2Ti+Agss/TiAg/Ti3AlC2. Through the mechanical properties test of the joints,a maximum shear strength value of 135.9 MPa was obtained when the joint was brazed at 850℃ for 10 min. The fracture occurred at the Ti3AlC2 ceramic side adjacent to the brazed seam during the shear test. The interfacial microstructure of the joints was similar to each other,while the shear strength decreased when reduces or improves the brazing temperature. |
| |
| Keywords: | superalloy ceramic brazing interfacial microstructure shear strength |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《焊接学报》浏览原始摘要信息 |
|
点击此处可从《焊接学报》下载全文 |
|
