Mechanical Response and Performance Relationship of X70 Pipeline Steel with Weld Zone
| Autor: | Guang Da Xu, Li Feng Li, Peng Zhang, Jin Heng Luo, Li Xia Zhu, Gang Wu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Mechanical Engineering Pipeline (computing) Metallurgy 02 engineering and technology Weld zone 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials General Materials Science Strain response 0210 nano-technology |
| Zdroj: | Materials Science Forum. 993:622-627 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.993.622 |
| Popis: | With the development of the natural gas industry, high flux natural gas pipelines will cause local deformation because of pressurization, which has an important effect in the service safety of pipeline materials. In this paper, the X70 pipeline steel with weld zone was studied, and the tensile test was used to simulate the uniaxial tensile stress. The results showed that the strain was mainly concentrated in the weld zone, which can imply that the weld zone has high strain hardening ability. The heat-affected zone with poor internal structure was prone to breakage. The research results can provide theoretical basis and experimental basis for pipeline steel welding process design and safety evaluation under high flux conditions. |
| Databáze: | OpenAIRE |
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