基于热加工图与有限元分析的Inconel 600热挤压工艺研究  

Research on hot extrusion process of Inconel 600 based on hot processing map and finite element analysis

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 212013,China;Jiangsu Yinhuan Precision Steel Pipe Co.,Ltd.,Yixing 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：《压力容器》2021年第7期1-8,25,共9页Pressure Vessel Technology

基　　金：中国博士后科学基金项目(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)开放课题基金项目(2020RALKFKT017)。

摘　　要：利用Gleeble-3500试验机与Deform软件,采用热压缩试验与有限元分析相结合的方法,分析讨论了Inconel 600管材热挤压工艺参数的影响以及微观结构的变化规律。结果表明,对于热挤压工艺,基于热加工图的数据,计算得到了Inconel 600管材在挤压比为5.65的条件下最佳的热挤压工艺参数:挤压速率250 mm/s、挤压温度1150℃,并且根据该工艺进行了实际生产,管材成品率提高了34%;对于微观结构,热挤压变形过程中,Inconel 600管材的微观组织由最初的链状组织转变为再结晶的细小等轴晶粒,晶粒发生细化。本文试验结果与数值模拟数据相吻合,为Inconel 600的热挤压生产提供了参考依据。The effects of hot extrusion process parameters and the variations of microstructure of superalloy Inconel 600 tubing were analyzed and discussed,respectively by using Gleeble-3500 tester and Deform software and using the method of combination of hot compression experiments and finite element analysis.The results show that,for the hot extrusion process,the optimal hot extrusion process parameters for Inconel 600 tubing with an extrusion ratio of 5.65 were obtained by calculation based on the data of hot processing map as follows:250 mm/s extrusion rate and 1150℃extrusion temperature,and practical production was carried out according to this process,and the yield of the tubing was improved by 34%;For the microstructure of Inconel 600 tubing,it was transformed from the initial chain-like grains to recrystallized equiaxed ones at last during the hot extrusion processing,and the grains were refined.The experimental results agree with the simulation data,which provides a reference for the production of hot extruded tubing of Inconel 600 super alloy.

关 键 词：镍基高温合金 热加工图 热挤压 有限元分析 

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]