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首页> 外文会议>International Conference on Microalloying for New Steel Processes and Applications; 20050907-09; Basque Country(ES) >Development of Low Carbon Microalloyed Bainitic Steels for Structural Plate Applications
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Development of Low Carbon Microalloyed Bainitic Steels for Structural Plate Applications

机译：结构板用低碳微合金贝氏体钢的开发

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摘要

Steels with bainitic microstructures show the capacity to fulfil the requirements of high strength and low temperature toughness necessary for plate steels in specialised industrial constructions. The introduction of steels with higher strength allows for weight reductions of steel constructions. This paper investigates the development of hot rolled structural plate steels through laboratory hot rolling simulations of thermo-mechanically controlled processes (TMCP). Specific alloying and microalloying along with an optimised TMCP process has allowed high tensile properties to be achieved in combination with high levels of toughness. Tensile strengths of up to 900 MPa have been achieved with Charpy V-notch toughness greater than 200J at -40?. Elements such as molybdenum, niobium and boron have been added to low carbon steels to promote the formation of fully bainitic microstructures with much lightened chemical compositions. The presented concepts allow the production of steel grades above S500 up to S690.
机译：具有贝氏体组织的钢具有满足特殊工业结构中的钢板所需的高强度和低温韧性的能力。引入强度更高的钢可以减轻钢结构的重量。本文通过热机械控制过程（TMCP）的实验室热轧模拟研究热轧结构钢板的发展。特殊的合金化和微合金化以及优化的TMCP工艺使高拉伸性能与高韧性相结合。夏比V型缺口韧性在-40°C时大于200J，可实现高达900 MPa的拉伸强度。诸如钼，铌和硼的元素已添加到低碳钢中，以促进化学成分大大减轻的全贝氏体组织的形成。提出的概念允许生产S500以上至S690以上的钢种。

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