火灾环境对Q345厚板铁素体相含量及硬度的影响
The Influence of Fire Environment on Ferrite Phase Content and Hardness of Q345 Thick Pate
徐浩 1缑瑞宾 1王念 2于敏3
作者信息
- 1. 安徽科技学院 机械工程学院,安徽 凤阳 233100
- 2. 蚌埠市特种设备监督检验中心,安徽 蚌埠 233000
- 3. 安徽科技学院 建筑学院,安徽 蚌埠 233000
- 折叠
摘要
为揭示不同火灾环境下Q345 厚板组织和性能的变化规律,通过显微组织定量表征和硬度性能测试方法,分析了不同火灾环境对Q345 厚板铁素体含量及硬度分布规律的影响.结果表明:在相同受火温度下,Q345 厚板铁素体含量及硬度沿厚向的变化趋势不明显;而不同受火温度下,Q345 厚板相同测试点位置处的铁素体含量随温度的升高而下降,其硬度随温度的升高而增大.基于试验结果,分别建立了Q345 厚板VF-T和H-l-T预测模型,并揭示了VF-H相互影响关系,该模型可为火灾环境下Q345 厚板组织和性能的变化评价提供理论参考.
Abstract
To reveal the variation law of microstructure and properties of Q345 thick plate under different fire en-vironment,the influence of different fire conditions on the ferrite phase content and hardness distribution of Q345 thick plate is analyzed by means of microstructure quantitative characterization and hardness testing.The results show that under the same fire temperature,the variation trend of ferrite phase content and hardness along the thickness direction of Q345 thick plate is not significant.However,under different fire temperatures,the ferrite phase content of Q345 thick plate at the same test point decreased while the hardness increased with the increas-ing temperature.Based on test results,the VF-T and H-l-T predictive models for ferrite phase content and hard-ness of Q345 thick plate are established,respectively.The interrelationship between VF and H is revealed,provi-ding a theoretical reference for evaluating the changes in microstructure and properties of Q345 thick plate under fire conditions.
关键词
火灾环境/Q345厚板/铁素体含量/硬度/预测模型Key words
fire environment/Q345 thick pate/ferrite phase content/hardness/prediction model引用本文复制引用
基金项目
安徽省教育厅科学研究重点项目(2022AH051630)
安徽省教育厅科学研究重点项目(KJ2021A0862)
出版年
2024
NETL
NSTL
万方数据