CAJ | 학술논문

用金相分析手段研究了在900～1150℃不同温度下保温后不同淬火方式下铸态2．25Cr-1Mo-0．25V钢第二相析出规律。结果表明，铸态2．25Cr-1Mo-0．25V钢高温析出后，采用盐水淬能更好的保持高温析出第二相的形貌特点；随着保温时间的延长，第二相析出颗粒长大，且析出物增多，保温45 min第二相含量最多，易于观察第二相的形貌分布；随着温度的升高，第二相百分数呈下降趋势，950℃和1050℃是析出第二相的适合温度。
용금상분석수단연구료재900～1150℃불동온도하보온후불동쉬화방식하주태2．25Cr-1Mo-0．25V강제이상석출규률。결과표명，주태2．25Cr-1Mo-0．25V강고온석출후，채용염수쉬능경호적보지고온석출제이상적형모특점；수착보온시간적연장，제이상석출과립장대，차석출물증다，보온45 min제이상함량최다，역우관찰제이상적형모분포；수착온도적승고，제이상백분수정하강추세，950℃화1050℃시석출제이상적괄합온도。
The precipitation regulation of the second phase of as-cast 2.25Cr-1Mo-0.25V steel have been studied under different quenching methods after thermal insulation at different temperatures among 900~1 150℃ by metallo-graphic analysis method .The results show that brine quenching could keep the good appearance characteristics of the second phase better after high temperature precipitation of as-cast 2.25Cr-1Mo-0.25V steel, and with the time prolon-ging, the precipitated particles of second phase grow and the precipitates increase , and there are the most contents of second phase when holding for 45min, which easily observe the appearance distribution of second phase , and with the temperature increasing , the second phase percentage presents a downward trend and the suitable temperatures for the precipitation of second phase are 950℃and 1 050 ℃.