Relationships between the microstructure and fracture toughness of microalloyed (API 5L X65) steels Zusammenhänge zwischen Mikrostruktur und Bruchzähigkeit von mikrolegierten (API 5L X65)-Stählen
Praktische Metallographie/Practical Metallography, cilt.42, sa.6, ss.290-303, 2005 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Derleme
- Cilt numarası: 42 Sayı: 6
- Basım Tarihi: 2005
- Doi Numarası: 10.3139/147.100265
- Dergi Adı: Praktische Metallographie/Practical Metallography
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.290-303
- Yozgat Bozok Üniversitesi Adresli: Evet
Özet
The present article is intended to examine the relationships between the microstructure and the fracture mechanical properties. It uses the J integral concept for a characterization of the properties of fracture mechanics. The microalloyed steels of the X65/API-5L type were used for this purpose. Some of the individual microstructures were characterized qualitatively, others quantitatively, by means of a light microscope (LM) and a scanning electron microscope (SEM). The examinations of the size and distribution of the non-metallic inclusions and precipitates were made by means of a SEM and an LM, in some cases. Tensile tests and notch bend impact tests were performed to determine the mechanical properties. The properties of fracture mechanics were examined on three-point bending test samples at a room temperature. The multi-sample method was employed to determine the crack growth resistance curve. © Carl Hanser Verlag, München.