论文部分内容阅读
为了提高油气管道的输送效率,降低管道建设成本,并满足复杂环境下油气管道能稳定服役的要求,钢管行业开展了大量的工作来研发冶金和力学性能(强度、韧性及延性)优异的管线钢。介绍了高强度管线钢的最新研究进展以及基于应变设计的管线钢的力学性能。分析了化学成分、显微组织、TMCP工艺和ACC工艺等对管线钢强度、韧性和延性的影响。分析结果表明,新开发的非传统TMCP工艺有助于改善管线钢的力学性能,管线钢的强度、韧性和延性与合金元素的含量相关,最佳显微组织的开发提供了高应变能力应用所需的力学性能。分析结果还表明,对于生产低屈强比、高延伸率和足够韧性的管线钢,传统TMCP和非传统TMCP工艺均是有效的工艺路线。
In order to improve the transmission efficiency of oil and gas pipelines, reduce the pipeline construction costs and meet the requirements for stable service of oil and gas pipelines in complex environment, the steel pipe industry has carried out a great deal of work to develop pipeline steel with excellent metallurgical and mechanical properties (strength, toughness and ductility) . The latest research progress of high strength pipeline steel and mechanical properties of pipeline steel based on strain design are introduced. The effects of chemical composition, microstructure, TMCP process and ACC process on the strength, ductility and ductility of pipeline steel were analyzed. The results show that the newly developed non-traditional TMCP process can improve the mechanical properties of pipeline steel. The strength, toughness and ductility of pipeline steel are related to the content of alloying elements. The development of the best microstructure provides high strain capacity Required mechanical properties. The analysis also shows that both traditional TMCP and non-traditional TMCP processes are effective process routes for the production of pipeline steels with low yield ratios, high elongation and sufficient toughness.