钢管2024，Vol.53Issue(3)：8-12,5.DOI:10.19938/j.steelpipe.1001-2311.2024.3.08.12
Ce对10Cr5MoV钢α-Fe晶粒尺寸及奥氏体长大行为的影响
Effect of Ce on α-Fe Grain Size and Austenite Growth Behavior of 10Cr5MoV Steel
摘要
Abstract
The backscattered electron diffraction(EBSD)process is used to measure and analyze the grain size of α-Fe in two test steels,one containing no rare earth and the other containing Rare Earth Ce.And the results show that the addition of Rare Eearth Ce makes the α-Fe grain refined,and in turn forms the diffused fine rare earth inclusion as the heterogeneous nucleation core,which improves the-nucleation rate in the tempering process;the starting and ending times of the re-crystallization process is delayed by the dragging and pinning effects of the solution rare earth,and thus the driv-ing force of the re-crystallization transformation increased,and in turn the re-crystallization generating temperature is redu-ced.The effect of Rare Earth Ce on austenite growth behavior is studied by means of getting the said two test steels auste-nitized with different austenitization processes.The result demonstrates that under the austenitization conditions of heating at 880～1 180 ℃ and holding for 30～90 minutes,the austenite growth index n and grain growth rate constant K of the test steel decrease,whereas the activation energy Q of austenite growth and the diffusion frequency factor Mo of grain growth increase,which means that the addition of Ce has a certain inhibitory effect on the austenite growth behavior of the test steel.关键词
Ce/10Cr5MoV钢/奥氏体化/α-FeKey words
Ce/1OCr5MoV steel/austenitization/α-Fe引用本文复制引用
石晓霞,陈禹含,詹飞,罗忠辉,强强..Ce对10Cr5MoV钢α-Fe晶粒尺寸及奥氏体长大行为的影响[J].钢管,2024,53(3):8-12,5.基金项目
内蒙古自治区科技计划项目(2020GG20) （2020GG20）
