Abstract
Stress corrosion cracking (SCC) of laser powder bed fusion 316 L stainless steel in oxygenated high-temperature water environments with chloride addition at 288 °C was studied. The influences of surface finishes (as-built, mechanically polished, Hirtisation® and shot peened), heat treatments (solution annealing at 1066 and 1150 °C and hot isostatic pressing) and the printing orientations on SCC were evaluated. Hirtisation resulted in a lower SCC susceptibility than as-built or polished surface while shot peening showed the lowest apparent SCC resistance. A high annealing temperature decreases SCC resistance. The effect of printing orientation is material and environment dependent.
| Original language | English |
|---|---|
| Article number | 112118 |
| Journal | Corrosion Science |
| Volume | 233 |
| DOIs | |
| Publication status | Published - 1 Jun 2024 |
| MoE publication type | A1 Journal article-refereed |
Funding
The work is funded by SAFER 2028 AMANE project (Valtion ydinjätehuoltorahasto, grant SAFER 33/2023).
Keywords
- Heat treatment
- High-temperature water
- Laser powder bed fusion
- Stainless steel
- Stress corrosion cracking
- Surface treatment