摘要
为解决Φ9.5m级2219铝合金整体过渡环研制难题,提出了铸锭制备、环坯制备、环轧成形各个环节精准控制策略,形成了大规格环件整体形-性协同极限制造技术路线,并成功试制出Φ9.5 m级超大规格2219铝合金环件,获得了均匀细化的微观组织结构和优异的综合性能。锻环微观组织均匀,未出现明显各向异性,无粗大残余结晶相聚集,晶粒细小且分布均匀;锻环沿圆周均布各处力学性能存在着一定的波动,但综合性能大幅提升,满足设计指标要求,三向力学性能无明显各向异性。
In order to solve the difficult problems of developing 9.5 m diameter 2219 aluminum alloy ring,the precise control strategies of ingot casting,ring billet preparation and ring rolling forming are put forward,and the forming-property collaborative extreme manufacturing technical route of large-scale ring parts is formed.The 9.5 m ultra-large diameter 2219 aluminum alloy ring is successfully trial-produced,and the uniform and fine microstructure and excellent comprehensive properties are obtained.The microstructure uniformity of forging ring is excellent without obvious anisotropy and coarse residual crystallization phases and grains are fine and uniform.The mechanical properties of forging ring are slightly fluctuating along the circumference,but the comprehensive properties are greatly improved,which meet the design requirements with certain redundancy,and the three-dimensional mechanical properties are without obvious anisotropy.The excellent microstructure and properties of the ring prove that the manufacturing route is feasible,and the development idea can be extended to the production and manufacturing of other large-scale aluminum alloy forgings.
作者
张曼曼
魏瑞刚
阳代军
张文学
呼啸
Zhang Man-man;Wei Rui-gang;Yang Dai-jun;Zhang Wen-xue;Hu Xiao(Capital Aerospace Machinery Corporation Limited,Beijing,100076;Tianjin Aerospace Long March Technical Equipment Corporation Limited,Tianjin,300462)
出处
《导弹与航天运载技术》
CSCD
北大核心
2021年第3期100-105,共6页
Missiles and Space Vehicles
关键词
Φ9.5m级环件
2219铝合金
形-性协同制造
残余结晶相
9.5m diameter ring
2219 aluminum alloy
forming-property collaborative manufacturing
residual crystallization phases
