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Behaviour of Structural Carbon Steel at High Temperatures

材料科学与工程（中英文A版） 2012年第7期2卷 501-510页

作者： juan an.on.o trilleros villaverde irene huertas gonzalez Department of Materials Science and Metallurgical Engineering Universitas Complutensis of Madrid Ciudad Universitaria s/nMadrid 28040 Spain

The research develops an experimental study on two carbon steels used for construction of structures on civil works, S355NL and S460NL, to high temperatures with values ranging between 500 °C and 950 °C. In order to obtain experimental evidence of behavior of steels at elevated temperatures, the chemical and structural characterizations and tested steels were made, deducing the found microstructures and average grain sizes measured. Tensile tests at elevated temperatures were made and steels mechanical properties were deducted at different temperatures. Also hardness steels tests were made. Creep and plastic deformation phenomena were observed from micrography and fractography studies.

关键词：建筑结构碳素钢高温行为实验证据拉伸试验土建工程研究开发

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Temperature Field on Structural Carbon Steel under Fire Conditions

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材料科学与工程（中英文B版） 2011年第6期1卷 725-735页

作者： juan an.on.o trilleros villaverde Sonia Mato Diaz irene huertas gonzalez Department of Materials Science and Metallurgical Engineering Universitas Complutensis of Madrid Ciudad Universitaria s/nMadrid 28040 Spain

The behaviour of structural steels components subjected to a high temperature field depends not only on the absolute temperature reached, but also on the temperature versus time function and heating rate. The research objective of the present work was the determination of the heating rate impact on selected strength parameters of structural steels. Tests were carried out on structural carbon steel in order to find experimental parameters required for the limit state analysis of steel structures under the thermal conditions as occur in fires. An electrical furnace has been designed and constructed to simulate the effect of the fire in buildings, which allowed treat a sample thermally following the temperature profile for the different standard curves of fire. For this purpose, an electrical controller has been used to heat the furnace and to control the experimental temperatures achieves into the furnace when a specific fire curve was applied. The furnace temperature time fields for the internal and external faces of the sample as well as the furnace atmosphere were registered. A spreadsheet method was used to predict the temperature of the steel samples and compare them with temperatures obtained experimentally, following the European Convention for Constructional Steelwork.

关键词：碳素结构钢温度场电气控制器火焰实验参数曲线轮廓绝对温度加热速率

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