退火温度对镍基ODS合金组织结构的影响  

Influence of Annealing Temperature on Microstructure of Nickel-Based ODS Alloy

作　　者：王彬 毛哲 刘实[2] 熊良银[2] Wang Bin;Mao Zhe;Liu Shi;Xiong Liangyin(College of Mechatronics Engineering,Binzhou University,Binzhou 256600,China;CAS Key Laboratory of Nuclear Materials and Safety Assessment,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China)

机构地区：[1]滨州学院机电工程学院,山东滨州256600 [2]中国科学院金属研究所中国科学院核用材料与安全评价重点实验室,辽宁沈阳110016

出　　处：《稀有金属材料与工程》2023年第12期4141-4146,共6页Rare Metal Materials and Engineering

摘　　要：对冷变形后镍基ODS合金进行不同温度的退火,通过TEM、XRD和EBSD分析了合金的微观组织结构,探究了退火工艺对冷变形后镍基ODS合金微观组织结构的影响。结果表明:随着退火温度的升高,镍基ODS合金的位错密度降低,少量纳米氧化物颗粒发生粗化;冷变形态合金经过900℃退火后,组织均匀且纳米氧化物颗粒未发生明显长大;通过计算,确认了900℃退火后镍基ODS合金拉伸性能的主要贡献者为位错强化和弥散强化,为合金性能的提升提供了理论支撑和有效手段。The microstructure of the cold-rolled nickel-based oxide dispersion strengthened(ODS)alloy after annealing at different temperatures were characterized by XRD,EBSD,and TEM.The influence of the annealing process on the microstructure of the cold-rolled nickel-based ODS alloy was studied.The results show that the dislocation density of the alloy decreases and part of the oxide particle coarsens with the annealing temperature rising.Besides,there are uniform microstructure and fine oxide particles in the nickel-based ODS alloy after annealing at 900℃.According to the calculation,the tensile strength of the alloy after annealing at 900℃is mainly contributed by the dispersion strengthening and dislocation strengthening which provide the theoretical basis and the effective method to improve the properties of the nickel-based ODS alloy.

关 键 词：镍基ODS合金 氧化物颗粒 位错密度 弥散强化 退火温度 

分 类 号：TG146.1[一般工业技术—材料科学与工程]