Low temperature impact toughness of the main gas pipeline steel after long-term degradation

Central European Journal of Engineering - Tập 4 - Trang 408-415 - 2014
Pavlo O. Maruschak1, Iryna M. Danyliuk1, Roman T. Bishchak2, Tomaž Vuherer3
1Ternopil Ivan Pul’uj National Technical University, Ruska 56, Ukraine
2Ivano-Frankivsk National Technical University of Oil and Gas, Karpatska 15, Ukraine
3University of Maribor, Maribor, Slovenia

Tóm tắt

The correlation of microstructure, temperature and Charpy V-notch impact properties of a steel 17G1S pipeline steel was investigated in this study. Within the concept of physical mesomechanics, the dynamic failure of specimens is represented as a successive process of the loss of shear stability, which takes place at different structural/scale levels of the material. Characteristic stages are analyzed for various modes of failure, moreover, typical levels of loading and oscillation periods, etc. are determined. Relations between low temperature derived through this test, microstructures and Charpy (V-notch) toughness test results are also discussed in this paper.

Tài liệu tham khảo

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