热模拟方法在第二相析出动力学中的应用  

Application of thermal simulation method in kinetics of second phase precipitation

作　　者：刘彦宁 李拔[1] 李南[1] 王哲[1] LIU Yanning;LI Ba;LI Nan;WANG Zhe(Central Iron and Steel Research Institute Co.,Ltd.,Beijing 100081,China)

机构地区：[1]钢铁研究总院有限公司,北京100081

出　　处：《物理测试》2023年第3期40-45,共6页Physics Examination and Testing

基　　金：钢铁研究总院自主投入研发专项基金(事20S61720J)

摘　　要：系统介绍了应力松弛法和双道次压缩法两种热模拟方法及其在钢中第二相析出动力学曲线研究中的具体研究方法和应用实例。应力松弛法利用材料的应力松弛过程来得到不同温度下钢中第二相析出的动力学曲线。双道次压缩法则通过对钢中的试样进行双道次压缩来研究不同温度下第二相析出的动力学特性。通过实际应用发现,应力松弛法具有研究时间短、样品需求少等优点;而双道次压缩法则能够更加准确地计算析出开始点和结束点,可以得到更为精确的数据,适用于高精度研究。两种方法的应用都取得了较好的效果,为钢中第二相析出动力学曲线研究提供了可靠的试验方法,可为钢材的冶金工艺研发和工程设计提供重要参考。Two kinds of thermal simulation methods,i.e.,stress relaxation method and double-pass compression method,as well as their specific research methods and application examples in the study of the second phase precipitation kinetics curve in steel were systematically introduced.The stress relaxation method used the stress relaxation process of the material to obtain the kinetics curve of the second phase precipitation in the steel at different temperatures.The double-pass compression method was used to study the kinetics of second phase precipitation at different temperatures by double-pass compression of samples in steel.Through practical application,it was found that the stress relaxation method had the advantages of short time and less sample demand,while the double-pass compression method could calculate the starting and ending points of precipitation more accurately,and obtain more accurate data,which was suitable for high-precision research.The application of two methods had achieved good results,which provided a reliable experimental method for the study of the second phase precipitation kinetics curve in steel.Moreover,they provided an important reference for the R&D and engineering design in metallurgical process of steel.

关 键 词：热模拟 第二相 应力松弛 双道次压缩 

分 类 号：TG142.1[一般工业技术—材料科学与工程]