CAJ | 학술논문

探讨了不同热处理工艺对12Cr2Mo1R耐热钢板性能和组织的影响，结果表明：随正火温度的升高贝氏体增加，强度提高，975℃正火后，显微组织为100%贝氏体和（Fe，Cr）3C型渗碳体；随回火温度的提高及回火时间的延长，强度降低，600℃回火时析出的纳米强化相不断长大成针状，同时，（Fe，Cr）3C型渗碳体不断球化，逐渐向（Fe，Cr）7C3型转化；正火处理后再经650℃回火处理，负蠕变现象消失。生产中12Cr2Mo1R钢宜采用正火+回火处理，正火温度920～950℃，保温时间1.5～3.0 min/mm；回火温度720～750℃，保温时间2.0～4.0 min/mm。
탐토료불동열처리공예대12Cr2Mo1R내열강판성능화조직적영향，결과표명：수정화온도적승고패씨체증가，강도제고，975℃정화후，현미조직위100%패씨체화（Fe，Cr）3C형삼탄체；수회화온도적제고급회화시간적연장，강도강저，600℃회화시석출적납미강화상불단장대성침상，동시，（Fe，Cr）3C형삼탄체불단구화，축점향（Fe，Cr）7C3형전화；정화처리후재경650℃회화처리，부연변현상소실。생산중12Cr2Mo1R강의채용정화+회화처리，정화온도920～950℃，보온시간1.5～3.0 min/mm；회화온도720～750℃，보온시간2.0～4.0 min/mm。
The influences of different heat treatment process on the microstructure and properties of 12Cr2Mo1R heat-resistant steel plate were discussed. The results showed that with normalizing temperature rise, the bainite content and the strength rise; after normalizing at 975℃, the microstructure is 100%bainite and (Fe,Cr)3C type cementite;with the increase of tempering temperature and the extension of tempering time, the strength decreases and the nanometer strengthening phase separated in tempering at 600℃grows into a needle, and at the same time, the (Fe,Cr)3C cementite spheroidizes continuously and gradually turns to (Fe,Cr)7C3; the tempering treatment at 650℃after normalizing makes negative creep phenomenon disappearing. In production, 12Cr2Mo1R ought to adopt normalizing+tempering treatment, the normalizing temperature is between 920 and 950℃, the holding time is 1.5-3.0 min/mm, the tempering temperature is 720-750℃and the holding time is 2.0-4.0 min/mm.