摘要
采用数值模拟和实验研究的方法对Al-Zn-Mg-Cu高强铝合金厚板锻件三镦两拔展宽和四镦三拔展宽的多向自由锻工艺及其组织性能进行了研究。该合金多向锻造工艺过程的数值模拟和实验研究结果表明,在锻造工艺四镦三拔比三镦两拔总锻比大4.52的条件下,锻件内的等效应变值增大了约3.80～4.00;锻态组织中的第二相更加细碎化和弥散化;热处理的晶粒组织更细小且分布更均匀;锻件性能略优,且3个方向上性能值更接近。
Multi-directional free forging process of high strength aluminum alloy thick plates and its microstructure and mechanical properties were investigated by numerical simulation and experiments.The process is of three-times upsetting,two-times drawing and forming operations and four-times upsetting,three-times drawing and forming operations.The numerical simulation and experiment results show that when the forging ratio of four-times upsetting and three-times drawing is 4.52 greater than that in three-times upsetting and two-times drawing,the values of equivalent strains is 3.8-4.0 bigger;second phases are smaller and more dispersion;grains are smaller and more uniform;mechanical properties are higher and nearly the same in the three directions.
出处
《锻压技术》
CAS
CSCD
北大核心
2013年第4期167-171,共5页
Forging & Stamping Technology
基金
山西省回国留学人员科研项目(2011-074)
山西省科技攻关项目(20110321013-02)
关键词
高强铝合金厚板
多向自由锻工艺
塑性变形
热处理
thick plates of high strength aluminum alloys
multi-directional free forging process
plastic deformation
heat treatment
