退火工艺与碳含量对Monel 400合金组织稳定性的影响  

Effect of annealing process and carbon content on microstructure stability of Monel 400 alloy

作　　者：张涛 郑文杰[2] 李才巨[1] 方轶[3] Zhang Tao;Zheng Wenjie;Li Caiju;Fang Yi(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming Yunnan 650039,China;Research Institute of Special Steels,Central Iron and Steel Research Institute Co.,Ltd.,Beijing 100081,China;Jiangyou Changcheng Special Steel Co.,Ltd.of Pangang Group,Jiangyou Sichuan 621701,China)

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650039 [2]钢铁研究总院有限公司特殊钢研究院,北京100081 [3]攀钢集团江油长城特殊钢有限公司,四川江油621701

出　　处：《金属热处理》2023年第4期184-189,共6页Heat Treatment of Metals

摘　　要：研究了Monel 400合金在不同碳含量(0.004%~0.100%C)、不同退火温度(750~950℃)和退火时间(10~60 min)下晶粒长大的规律和组织均匀性。结果表明:Monel 400合金在900℃以上退火时,晶粒长大的速度更快,组织均匀性随退火温度的升高而变差;退火时间在30 min之内时,晶粒长大速度较快,组织均匀性逐渐变差,晶粒长大到一定程度后,其长大速度降低,组织均匀性略有改善;在800~850℃退火10~20 min可以得到晶粒相对细小且较为均匀的组织。根据Anelli改进模型建立了6种不同碳含量Monel 400合金在750~950℃退火过程中的晶粒长大方程。Grain growth and microstructure uniformity of Monel 400 alloy with different carbon contents(0.004%-0.100%C)after annealing at different temperatures(750-950℃)for different time(10-60 min)were studied.The results show that when the annealing temperature of Monel 400 alloy is above 900℃,the grain growth rate is faster,and the microstructure uniformity decreases with the increase of annealing temperature.When the annealing time is shorter than 30 min,the grain growth rate is faster,while the microstructure uniformity becomes worse.When the grain grows to a certain extent,the grain growth rate decreases and the microstructure uniformity improves slightly.When annealed at 800-850℃for 10-20 min,the relatively fine and uniform microstructure can be obtained.The grain growth equations of the Monel 400 alloy with 6 different carbon contents during annealing at 750-950℃are established based on the improved Anelli model.

关 键 词：Monel 400合金 退火工艺 化学成分 组织均匀性 晶粒长大模型 

分 类 号：TG166.7[金属学及工艺—热处理]