Toughness and microstructure of 13Cr4NiMo high-strength steel welds
✍ Scribed by P. Bilmes; C. Llorente; J. Pérez Ipiña
- Book ID
- 111785931
- Publisher
- Springer US
- Year
- 2000
- Tongue
- English
- Weight
- 216 KB
- Volume
- 9
- Category
- Article
- ISSN
- 1059-9495
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Chromium is an effective element for improvement in the oxidation resistance of steels. However, chromium addition to ferritic creep resistant steel is restricted to around 9-10 wt.%, since excess addition of chromium results in formation of delta-ferrite which decreases creep strength and toughness
The microstructure, fracture and fatigue behavior of spot welds were characterized. The results showed that the improper welding parameters easily caused folding interface in HAZ between welded-sheets. Overload failure modes were interfacial fractures even if nugget diameters satisfied d > 5 √ t. Th