Inconel 600合金的微观组织及其热加工图  

Microstructure and thermal processing map of Inconel 600 alloy

作　　者：周宇森 程晓农[1] 罗锐[1] 高佩[1,2] 刘瑜 袁志钟[1] Zhou Yusen;Cheng Xiaonong;Luo Rui;Gao Pei;Liu Yu;Yuan Zhizhong(School of Materials Science and Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China;Jiangsu Yinhuan Precision Steel Pipe Co.,Ltd.,Yixing Jiangsu 214203,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214203

出　　处：《金属热处理》2022年第10期107-112,共6页Heat Treatment of Metals

基　　金：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);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)。

摘　　要：利用Gleeble-3500试验机进行热压缩试验,绘制了Inconel 600合金的热加工图,对热加工图不同区域对应的微观组织进行了研究,并利用热加工图给出的热加工窗口进行了实际的热挤压生产。结果表明,在大应变量0.6下变形时热加工窗口总体稳定在低应变速率0.01~0.1 s^(-1)区域和高应变速率10 s^(-1)下的1150~1200℃区域。实际生产的管材具有良好的宏观形貌,显微组织基本为存在孪晶的等轴再结晶晶粒,晶粒尺寸较退火态合金发生了细化。Thermal processing map of Inconel 600 alloy was obtained through thermal compression experiment by using Gleeble-3500 testing machine, and the microstructure corresponding to different zones of the thermal processing map was studied. Finally, the actual hot extrusion production was carried out by using the thermal processing window given by the thermal processing map. The results show that when the strain is 0.6, the thermal processing window is generally stable in the low strain rate region of 0.01-0.1 s^(-1)and the high strain rate 10 s^(-1) at 1150-1200 ℃. The actually produced pipe has a good macro morphology, and the microstructure is basically equiaxed recrystallized grains with twins, which are refined comparing with that of as-annealed alloy.

关 键 词：热加工图 高温合金 Inconel 600合金 显微组织 

分 类 号：TH142[一般工业技术—材料科学与工程] TG113.12[机械工程—机械制造及自动化]