Abstract
According to Norton creep constitutive equation and 600°C creep parameters of as-cast Ni-based BNi-2 filler and SS304 stainless steel, 105 h creep analysis for stainless steel plate-fin structure was carried out by ABAQUS finite element code. The creep strain and stress distributions of plate-fin structure were obtained. The creep deformation and the most dangerous position during high temperature service were predicted. The residual stress generated during the brazing process was also simulated and its effect on the creep has been discussed. Due to the mismatch of mechanical properties between filler metal and base metal, the welding residual stress was generated inevitably, which has great influence on the creep deformation and life. Especially, the creep strain and stress are concentrated in the fillet, where the crack would initiate and failure occur.
| Original language | English |
|---|---|
| Pages (from-to) | 539-545 |
| Number of pages | 7 |
| Journal | Jinshu Xuebao/Acta Metallurgica Sinica |
| Volume | 43 |
| Issue number | 5 |
| State | Published - May 2007 |
Keywords
- Brazed residual stress
- Creep
- Finite element method
- Plate-fin structure