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根据材料的显微组织将管线钢分为四种类型,即铁素体-珠光体管线钢、针状铁素体管线钢、贝氏体-马氏体管线钢和回火索氏体管线钢;并以此为线索介绍了该四类管线钢的化学成分、显微组织和性能,综述了管线钢的发展历程.

There are four kinds of pipeline steels according to microstructure classification, i. e. ferritepearlite pipeline steel, acicular ferrite pipeline steel, bainite-martensite pipeline steel and tempered sorbite pipeline steel. The composition, microstructure and properties of four kinds of pipeline steels are analyzed, and the development of them are eveluated.

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