1Cr16Co5Ni2MoWVNbN耐热钢球座模锻成型工艺模拟与试验验证
Simulation and Test Validation on Die forging Process of 1Cr16Co5Ni2MoWVNbN Heat-resistant Steel Ball seat
梅飞强 1赵吉庆 2闫磊 1王云海 3杨钢2
作者信息
- 1. 中国航发沈阳黎明航空发动机有限责任公司,沈阳 110043
- 2. 钢铁研究总院有限公司特殊钢研究院,北京 100081
- 3. 内蒙古科技大学材料与冶金学院,包头 014010;钢铁研究总院有限公司特殊钢研究院,北京 100081
- 折叠
摘要
通过热压缩模拟实验研究了1Cr16Co5Ni2MoWVNbN耐热钢在热变形过程中的动态再结晶行为,通过Deform 3D有限元数值模拟研究了应变速率和坯料尺寸对1Cr16Co5Ni2MoWVNbN 耐热钢球座模锻成型工艺的影响.热压缩试验结果表明,1Cr16Co5Ni2MoWVNbN 耐热钢发生动态再结晶、混晶现象不明显的临界变形量约为20%,增大应变速率有利于在小变形量下,获得更加均匀的组织.数值模拟结果表明,随着应变速率提高,模锻件最小变形区域的等效应变与等效应力均增加,随着坯料直径增加,模锻件最小变形区的等效应变下降,等效应力先降低后提高.应变速率为0.1 s-1时,坯料直径ϕ60 mm～ϕ65 mm,最小变形区域工程应变可达到20%以上,且具有较好的锻造成型性.根据数值模拟结果,设计了直径ϕ60 mm、高度74 mm的坯料,以0.1 s-1的应变速率进行模锻验证试验,试制出的锻件成型好、组织与硬度均匀,验证了数值模拟结果的合理与可行性.
Abstract
The dynamic recrystallization behavior of 1Cr16Co5Ni2MoWVNbN heat-resistant steel during thermal deforma-tion was studied by thermal compression simulation experiments.The effects of strain rate and blank size on the die forging process of 1Cr16Co5Ni2MoWVNbN heat-resistant steel ball seat were studied by Deform 3D finite element numerical simu-lation.The results of thermal compression test showed that the critical deformation of 1Cr16Co5Ni2MoWVNbN heat-resistant steel was about 20%when full dynamic recrystallization happened and the phenomenon of mixed crystalline was not obvious.And increasing the strain rate was conducive to obtaining a more uniform structure under small deformation.The numerical simulation results showed that with the increase of the strain rate,the equivalent strain and equivalent stress in the minimum deformation area of the die forging increased.And With the increase of the diameter of the blank,the equivalent strain in the minimum deformation zone of the die forging decreased,and the equivalent stress decreased first and then increased.When the strain rate is 0.1 s-1,and the diameter of the blank is 60 mm-65 mm,the engineering strain in the minimum deformation area can reach more than 20%,and it had good forging formability.According to the numerical simulation results,a blank size with diameter of 60 mm and height of 74 mm was designed to verifying the form-ing of the die forging with strain rate of 0.1 s-1.The forgings were well formed,uniform in structure and hardness,which verified the rationality and feasibility of the numerical simulation results.
关键词
1Cr16Co5Ni2MoWVNbN耐热钢/数值模拟/模锻成型/Deform/3D软件/动态再结晶Key words
1Cr16Co5Ni2MoWVNbN Heat-resistant Steel/Numerical simulation/Die forging forming/Deform 3D soft-ware/Dynamic recrystallisation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据