热处理工艺对Inconel 617合金管组织性能的影响  

Effect of heat treatment process on microstructure and properties of Inconel 617 alloy tube

作　　者：刘昱君 程晓农[1] 罗锐[1] 高佩[1,2] Liu Yujun;Cheng Xiaonong;Luo Rui;Gao Pei(School of Materials Science and Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China;Jiangsu Yinhuan Precision Steel Tube Co.,Ltd.,Yixing Jiangsu 214200,China)

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013 [2]江苏银环精密钢管有限公司,江苏宜兴214200

出　　处：《金属热处理》2022年第2期173-177,共5页Heat Treatment of Metals

基　　金：轧制技术及连轧自动化国家重点实验室(东北大学)开放课题基金(2020RALKFKT017);中国博士后科学基金(2019M661738);江苏省高等学校自然科学研究面上项目(19KJB43001)。

摘　　要：利用光镜(OM)、硬度测试、室温拉伸试验等方法,研究了Inconel 617合金管的微观组织和力学性能在不同热处理工艺参数下的变化趋势。通过光镜对合金组织进行表征,分析了温度为1120~1200℃,保温时间为10、30 min时合金晶粒尺寸的变化规律,同时建立了晶粒尺寸长大的动力学模型。结果表明,随着温度的不断提高,晶粒的平均尺寸不断增大,并且晶粒内部逐渐出现较多的孪晶。同时,随着热处理温度的不断提高,合金的硬度变化趋势与抗拉强度变化趋势相同,二者都随着温度的升高,呈现下降的趋势;合金的伸长率随着温度的升高不断增加。Inconel 617合金的晶界迁移表观激活能Q为651.82 kJ/mol。In order to explore the heat treatment process of the alloy tube, the effects of different heat treatment parameters on microstructure and mechanical properties of Inconel 617 alloy tube were studied by means of optical microscope(OM), hardness and tensile test at room temperature, etc. The alloy was characterized by optical microscope, and the variation rule of the grain size of the alloy was analyzed when the temperature between 1120-1200 ℃ and the holding time was 10 and 30 min, respectively, and the dynamic model of grain size growth was established. The results show that the average grain size increases with the increase of temperature, and there are more twins in the grain. At the same time, with the continuous increase of heat treatment temperature, the change trend of hardness and tensile strength of the alloy is the same, both of them show a decreasing trend with the increase of temperature. The elongation of the alloy increases with the increase of temperature. The apparent activation energy of grain boundary migration of the Inconel 617 alloy is 651.82 kJ/mol.

关 键 词：热处理 Inconel 617合金 显微组织 宏观硬度 抗拉强度 伸长率 

分 类 号：TG166.7[金属学及工艺—热处理]