A286高温合金薄壁圆管局部梯度性能设计与实现
Design and implementation of local gradient properties of A286 superalloy thin-walled tube
王程民 1冯治国 2江玉莲 1陶亮 1莫宁宁1
作者信息
- 1. 贵州大学机械工程学院,贵州贵阳 550025
- 2. 贵州大学机械工程学院,贵州贵阳 550025;贵州省特色装备及制造技术重点实验室,贵州贵阳 550025
- 折叠
摘要
基于A286高温合金抽芯铆钉薄壁圆管退火的工艺要求,建立电磁场和温度场双向耦合的局部感应加热模型,研究电磁场和温度场的分布规律,然后进行了感应退火试验验证.结果表明,导磁体能够有效控制磁力线的分布,使用导磁体能够大幅度提高局部的磁通密度,进而提高加热效率.计算得到的温度梯度明显,表面温度分布曲线表现为两边低中间高的单峰曲线,退火后的硬度分布曲线则表现为两边高中间低的单峰曲线,低硬度区长约3.5 mm.对于退火后薄壁管的组织分布,非退火区呈现冷加工态组织,退火区的再结晶现象明显.
Abstract
Based on the annealing process requirement of thin-walled round tube of A286 superalloy rivet with core-pulling,a local induction heating model with bi-directional coupling of electromagnetic field and temperature field was established to study the distributions of electromagnetic field and temperature field,and then verified by the induction annealing test.The results show that the conducting magnet can effectively control the distribution of the magnetic field lines,and greatly increase the magnetic flux density,then in turn to improve the heating efficiency.The calculated temperature gradient is obvious,and the surface temperature distribution curve is unimodal with the middle high and two sides low,while the hardness distribution curve after annealing is unimodal with the middle low and two sides high,and the length of the low hardness zone is about 3.5 mm.After annealing of the thin-walled tube,the cold working microstructure is retained in the non-annealed zone,while the recrystallization is obvious in the annealed zone.
关键词
抽芯铆钉/薄壁管/A286高温合金/感应退火/显微组织Key words
core-pulling rivet/thin-walled tube/A286 superalloy/induction annealing/microstructure引用本文复制引用
基金项目
国家自然科学基金(52165042)
贵州省科学技术重点项目(黔科合基础[2020]1Z049)
贵州省优秀青年人才项目(黔科合平台人才[2021]5617号)
贵阳市科技人才培养项目(筑科合同[2021]43-1号)
贵州省科技计划(黔科合支撑[2023]—般308)
出版年
2024
NETL
NSTL
万方数据