CAJ | 학술논문

采用热力模拟试验技术、金相显微镜（OM）、扫描电镜（SEM）及透射电镜（TEM），并结合宏观硬度测试，研究了钛微合金钢形变奥氏体的连续冷却相变和组织演变规律，建立了试验钢连续冷却转变曲线，探讨了不同冷速对第二相析出的影响。结果表明，不同冷速下，试验钢获得了不同的微观组织，随冷速增加，第二相析出量增多，尺寸更细小，但冷速过高，析出被抑制。
채용열력모의시험기술、금상현미경（OM）、소묘전경（SEM）급투사전경（TEM），병결합굉관경도측시，연구료태미합금강형변오씨체적련속냉각상변화조직연변규률，건립료시험강련속냉각전변곡선，탐토료불동랭속대제이상석출적영향。결과표명，불동랭속하，시험강획득료불동적미관조직，수랭속증가，제이상석출량증다，척촌경세소，단랭속과고，석출피억제。
By using thermo-mechanical simulator, OM, SEM, TEM and macroscopic hardness test, the phase transformation behavior and microstructures evolution of deformed austenite in Ti microalloyed steel during continuous cooling process was studied. The CCT curve of tested steel was determined. The effect of cooling rate on the second-phase precipitation was investigated. The results show that different microstructures are obtained in tested steel at the different cooling rates. The precipitation amount of second-phase got more and the particle size is finer with increasing of cooling rate. But if the cooling rate is too high, the precipitation will be inhibited.