锻压技术

Al-Zn-Mg-Cu高强铝合金多向自由锻数值模拟与实验研究

英文标题：Numerical simulation and experiment research on multi-directional free forging of Al-Zn-Mg-Cu high strength aluminum alloy

作者：张云飞王亮赵晓东陈慧琴

单位：太原科技大学材料科学与工程学院北京航空材料研究院铝镁合金研究室

关键词：高强铝合金厚板多向自由锻工艺塑性变形热处理

分类号：TG316

出版年,卷(期):页码：2013,38(4):167-171

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.

基金项目：

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）

张云飞(1984-)，男，硕士研究生

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