火灾后空间结构材料强度无损检测方法研究
发布时间：2018-07-21 20:16
【摘要】：为研究火灾后空间结构材料的力学性能,对空间结构中常用的Q235、Q345钢材分别进行了高温处理、材料拉伸试验及里氏硬度试验.得到了热处理温度、冷却方式、钢材型号等因素对钢材抗拉强度、屈服强度及里氏硬度的影响规律.结果表明热处理温度小于500,℃时,热处理温度对钢材硬度及抗拉强度的影响不太显著,当热处理温度高于500,℃时,热处理温度对钢材硬度及抗拉强度的影响都较大.最后总结出热处理后钢材抗拉强度同里氏硬度相互关系,为火灾后空间结构材料强度无损检测提供一定的参考与支持.
[Abstract]:In order to study the mechanical properties of space structure materials after fire, the steel Q235 Q345, which is commonly used in space structure, was treated with high temperature, tensile test and hardness test respectively. The effects of heat treatment temperature, cooling mode and steel type on the tensile strength, yield strength and Riemann hardness of steel are obtained. The results show that when the heat treatment temperature is less than 500 鈩，
本文编号：2136732
[Abstract]:In order to study the mechanical properties of space structure materials after fire, the steel Q235 Q345, which is commonly used in space structure, was treated with high temperature, tensile test and hardness test respectively. The effects of heat treatment temperature, cooling mode and steel type on the tensile strength, yield strength and Riemann hardness of steel are obtained. The results show that when the heat treatment temperature is less than 500 鈩，
本文编号：2136732
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