| Abstract |
| Three different fatigue tests for 316 and 316LN stainless steels were conducted at RT, 600℃ and Ast= 1% for low cycle fatigue, at 200~400℃, 300~600℃ and Δε_(t) = 0% for thermal fatigue, and at 300~600℃ and Δε_(t) = 2% for thermomechanical fatigue. Low cycle, thermal and thermomechanical fatigue lives increased with the addition of nitrogen. Low cycle, thermal fatigue strength was increased but thermomechanical fatigue strength was almost same with the addition of nitrogen. Thermal fatigue life was decreased but thermal fatigue strength was increased at the higher temperature range. Thermomechanical fatigue life of in-phase was longer than that of out-of-phase. Fracture mode was transgranular for all tests. (Received September 3, 2004) |
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| Key Words |
| 316 Stainless steel, Thermomechanical fatigue, Nitrogen |
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