Abstract
The tungsten inert gas (TIG) brazing of nickel-based alloy and stainless steel using CuSi3 wire was carried out. The microstructures and mechanical properties of the joint were studied using OM, SEM, EDS, instron-testing machine and hardness measurement device. The results show that the joint has dual characteristic and is divided into a welding part on the stainless steel and a brazing part on the nickel-based alloy. The stainless steel fusion zone is made of Fe-based solid solution, the interface reaction layer is made of molten unmixed zone, Ni-based fir-tree crystal microstructure and Cu-based solid solution in the intergranular. The weld is made of α-copper matrix and Fe-based solid solution in the matrix. The shear strength reaches 195 MPa and the shear fracture occurs at the interface between brazing alloy and stainless steel. The microhardness in the Ni-based fir-tree crystal, the Fe-based solid solution of the fusion zone and Cu-based solid solution of the weld near the interface reach HV433.3, HV453.4 and HV150, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 834-839 |
| Number of pages | 6 |
| Journal | Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals |
| Volume | 18 |
| Issue number | 5 |
| State | Published - May 2008 |
Keywords
- Interface reaction layer
- Mechanical properties
- Microstructure
- Tungsten inert gas brazing
Fingerprint
Dive into the research topics of 'Characteristics of tungsten inert gas brazing joints of nickel-based alloy and stainless steel'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver