CAJ | 학술논문

基于试验方法，结合高中压汽轮机转子锻件实际生产工艺，研究了不同保温时间、锻造火次处理后晶粒尺寸、组织、力学性能的变化规律，揭示了高温扩散退火对30Cr1Mo1V 钢的影响。试验结果表明：高温扩散退火可消除因枝晶偏析与锻造变形产生的条带组织；只在锻前进行高温扩散退火，试样晶粒尺寸较小，且扩散的均质化作用提高了30Cr1Mo1V钢的横向韧性；锻后长时间高温加热将导致晶粒过大、组织粗化，大大降低了韧性；高温扩散退火对30Cr1Mo1V钢塑性无显著影响。
기우시험방법，결합고중압기륜궤전자단건실제생산공예，연구료불동보온시간、단조화차처리후정립척촌、조직、역학성능적변화규률，게시료고온확산퇴화대30Cr1Mo1V 강적영향。시험결과표명：고온확산퇴화가소제인지정편석여단조변형산생적조대조직；지재단전진행고온확산퇴화，시양정립척촌교소，차확산적균질화작용제고료30Cr1Mo1V강적횡향인성；단후장시간고온가열장도치정립과대、조직조화，대대강저료인성；고온확산퇴화대30Cr1Mo1V강소성무현저영향。
Based on experiments,combined with the practical production of high pressure steam turbine rotor forgings,the variation of grain size,microstructure and mechanical properties in differ-ent holding times and forging fire times were studied,the influences of high-temperature diffusion an-nealing on 30Cr1Mo1V steel were revealed as well.The results show that the banded structure pro-duced by dendritic segregation and forging deformation can be eliminated by high-temperature diffu-sion annealing.The grain size is smaller only before forging high-temperature diffusion annealing. The transverse toughness of the 30Cr1Mo1V steel can also be improved by homogenization.The grain and the structure are coarsened because of long time high temperature heating after forging,which leads to the worse toughness of the steel.Meanwhile,the plasticity of 30Cr1Mo1V steel is not influ-enced by the high-temperature diffusion annealing obviously.