Laser brazing of Inconel® 718 using Ag and Cu-Ag nanopastes as brazing materials

被引：35
作者：
Bridges, Denzel [1 ]
Ma, Chaoli [1 ,2 ]
Palmer, Zane [3 ]
Wang, Shutong [1 ]
Feng, Zhili [4 ]
Hu, Anming [1 ,5 ]
机构：
[1] Univ Tennessee, Dept Mech Aerosp & Biomed Engn, Knoxville, TN 37996 USA
[2] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Jiangsu, Peoples R China
[3] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
[4] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[5] Beijing Univ Technol, Inst Laser Engn, 100 Pingle Yuan, Beijing 100124, Peoples R China
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2017年 / 249卷
基金：
美国国家科学基金会;
关键词：
Brazing; Laser; Inconel; Nanopaste; Nanojoining; Core-shell; LOW-TEMPERATURE; NANOWIRE; NANOPARTICLE; NICKEL; PASTE;
D O I：
10.1016/j.jmatprotec.2017.06.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ag nanopastes composed of Ag nanoparticles or Ag nanowires and Cu-Ag nanopastes with Cu-Ag core-shell nanowires are used as a new brazing material for Inconel (R) 718. Ag nanoparticles or Ag nanowires are further added to the core-shell paste to adjust to a eutectic composition. Microstructural analysis of the brazed joints was carried out with EDS and XRD. High bonding strength (> 100 MPa) was obtained with both Ag and Cu-Ag nanopastes. It was concluded that the Cu-Ag nanopastes form stronger braze joints than the BAg-8 brazing alloy as a result of Hall-Petch strengthening. It has also been concluded that the addition Ag nanoparticles or Ag nanowires to the Cu-Ag core-shell nanowire paste have a significant impact on the bonding strength and fracture of the Cu-Ag joints.
引用
收藏
页码：313 / 324
页数：12
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