Abstract
FeAl porous material and stainless steel were welded by vacuum brazing using Cu-Sn green compact as brazing filler. The weldability of FeAl porous material with stainless steel was investigated. The results show that the composition and parameters of vacuum brazing have great effect on the tensile strength of welded FeAl porous material and stainless steel. Cu81Sn22 and Cu10Sn3 intermetallics are formed in the brazing line when the filler composition is Cu-25%Sn. (Cu, Sn) solid solution is formed in the brazing line when the filler composition is Cu-10%Sn. After brazing at 940°C for 15 min using Cu-10%Sn as brazing filler, the brazed FeAl porous material and stainless steel obtain the best tensile strength of 83.9 MPa, that is 90.6% of the tensile strength of FeAl porous material. The brazing mechanisms are the matrix materials joined by liquid brazing filler and the interdiffusion and reaction between the elements in filler and matrix materials.
| Original language | English |
|---|---|
| Pages (from-to) | 90-95 |
| Number of pages | 6 |
| Journal | Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals |
| Volume | 19 |
| Issue number | 1 |
| State | Published - Jan 2009 |
Keywords
- FeAl
- Porous material
- Vacuum brazing
- Weldability