X80高Nb管线钢组织与性能分析  被引量:5

Analysis on Microstructure and Mechanical Properties of High-niobium Microalloyed X80 Pipeline Steel

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作  者:严春妍[1] 黄健成[1] 田松亚[1] 白世武[2] 

机构地区:[1]河海大学机电工程学院,江苏常州213022 [2]中国石油天然气管道科学研究院,河北廊坊065000

出  处:《焊管》2013年第7期5-10,共6页Welded Pipe and Tube

基  金:江苏省自然科学基金资助项目(BK2011258);大学生创新性实验计划资助项目(201110294033)

摘  要:总结回顾了X80高Nb管线钢的研究和发展,对其冶金设计、化学成分、显微组织结构、各项力学性能以及应力腐蚀行为、焊接性等进行了分析,并讨论了X80高Nb管线钢在应用中需要进一步研究的几个技术问题。通过低C高Nb合金化设计,可获得细小的针状铁素体组织,保证材料成分的同时具有很高的强度和良好的韧性。高温轧制技术(high temperature processing,HTP)的采用,不仅满足X80管线钢的技术条件要求,而且可以显著降低生产成本,有利于实现石油天然气更加高效经济的输送。Research and development status of high-niobium microalloyed XS0 pipeline steel were summarized and reviewed. Metallurgical design, microstructures, mechanical properties, stress corrosion behavior and field weldability were analyzed, and several applicative technological problems requiring further study and exploration were discussed. A low carbon-high niobium alloy design is used to produce a refined acicular ferrite microstructure which provides a combination of high strength and excellent toughness. The employment of high temperature processing(HTP) enables an excellent combination of key material performance characteristics satisfying relative specifications for XS0 pipeline steel. Moreover, the HTP design allows for a significant reduction of total cost to realize the economical and efficient transmission of oil and gas.

关 键 词:X80管线钢 焊接 高Nb HTP 微合金化 

分 类 号:TG142.1[一般工业技术—材料科学与工程]

 

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