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首页> 外文会议>International Conference on Offshore Mechanics and Arctic Engineering 2007(OMAE2007) vol.4; 20070610-15; San Deigo,CA(US) >DEVELOPMENT AND PRODUCTION OF ULTRA-HIGH STRENGTH LINEPIPES WITH DUAL-PHASE MICROSTRUCTURE FOR HIGH STRAIN APPLICATION
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DEVELOPMENT AND PRODUCTION OF ULTRA-HIGH STRENGTH LINEPIPES WITH DUAL-PHASE MICROSTRUCTURE FOR HIGH STRAIN APPLICATION

机译：具有高应变应用的具有双相微观结构的超高强度线的开发和生产

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摘要

Extensive studies to develop high strength linepipes with higher deformability have been conducted. One of the key technologies for improving deformability is dual-phase microstructural control. Steel plate with ferrite-bainite microstructure can be obtained by applying Thermo-mechanical controlled processing, TMCP, made up with controlled rolling and accelerated cooling process. Low carbon-boron free steels were used to enable the ferrite formation during cooling after controlled rolling, and the accelerated cooling process with ultimate cooling rate enabled to achieve high strength of up to X120 grade. On-line heating process by induction device was also applied subsequently after accelerated cooling in order to improve Charpy energy of the base material and homogeneity of material properties in the plate. Trial production of X120 high deformability linepipe was also conducted by applying dual-phase microstructural control. Microstructural and mechanical properties of X120 linepipe are introduced in this paper.
机译：已经进行了广泛的研究以开发具有更高可变形性的高强度管道。改善可变形性的关键技术之一是双相微结构控制。采用热机械控制工艺TMCP，通过控制轧制和加速冷却过程可以得到具有铁素体-贝氏体组织的钢板。低碳无硼钢用于在受控轧制后的冷却过程中形成铁素体，并且具有最终冷却速率的加速冷却过程能够实现高达X120级的高强度。在加速冷却之后，随后还通过感应装置进行了在线加热过程，以提高基材的夏比能量和板中材料性能的均匀性。 X120高变形管线管的试生产也通过应用双相微结构控制进行。本文介绍了X120管道的显微组织和力学性能。

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