文献类型：期刊文献

中文题名：正火处理对建筑耐火钢组织和性能的影响

英文题名：Influence of Normalizing Treatment on Microstructure and Properties of Fire-resistant Steel for Construction

作者：杨卫芳[1]

第一作者：杨卫芳

机构：[1]新乡学院土木工程与建筑学院

第一机构：新乡学院土木工程与建筑学院

年份：2017

卷号：0

期号：18

起止页码：224-227

中文期刊名：热加工工艺

外文期刊名：Hot Working Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD_E2017_2018】；

语种：中文

中文关键词：耐火钢;组织;M-A岛

外文关键词：fire-resistant steel; microstructure; M-A island

摘要：通过金相显微镜、透射电镜观察,研究了正火温度对建筑耐火钢组织性能的影响。结果表明:正火后耐火钢组织主要为铁素体与M-A岛,M-A岛含量随着正火温度升高而增加,770℃时,M-A岛含量达到最大值,此后M-A岛随温度升高含量降低。随着正火温度的升高,试验钢的抗拉强度升高,正火温度超过770℃后,抗拉强度开始下降。耐火钢的最佳正火温度为770℃。
The influence of normalizing temperature on microstructure and properties of building fire-resistant steel was studied by means of the microscope and transmission electron microscope. The results show that the microstructure of the fire-resistant steel after normalizing is mainly ferrite and M-A islands, M-A island contents increase with normalizing temperature increasing, the M-A island content reaches maximum at 770 ℃, and then the M-A island contents decrease with the increase of temperature. With the increase of normalizing temperature, the tensile strength of the test steel increases. After normalizing temperature over 770℃, the tensile strength begins to decline. The optimum normalizing temperature of the refractory steel is 770℃.