Abstract
In the present paper, difficulties in material data sampling and lifetime estimation are discussed. A local deformation measuring technique is proposed to determine the creep properties of the weld. A damage mechanics approach is introduced to study the damage development and creep rupture of HK-40 furnace tubes due to the presence of a weld. It has been illustrated that damage is prone to the weld in the later period of service life. Metallographical research also indicates that the weld may have a higher damage rank. It is thus concluded that the weldments may become the weak link in HK-40 furnace tubes.
| Original language | English |
|---|---|
| Pages (from-to) | 189-196 |
| Number of pages | 8 |
| Journal | Key Engineering Materials |
| Volume | 171-174 |
| State | Published - 2000 |
| Event | Proceedings of the 1999 8th International Conference on Creep and Fracture of Engineering Materials and Structures - Tsukuba, Jpn Duration: 1 Nov 1999 → 5 Nov 1999 |