2A12铝合金FSW板材时效成形性研究Creep age forming formability of friction stir welded 2A12 aluminum alloy panels
黎俊初,黎文欢,刘大海,刘鸽平
摘要(Abstract):
为评价2A12铝合金搅拌摩擦焊构件时效成形工艺,设计了以时间参数为变量的焊后时效成形工艺模拟试验,进行了FSW(FSW-搅拌摩擦焊)焊件蠕变时效力学性能及成形性研究。结果表明,在搅拌头转速750 r/min、焊速60 mm/s的焊接工艺参数下,当时效成形时间为8 h时,FSW焊接件抗拉强度达到354.1 MPa,为母材强度的79.2%,其断裂位置基本位于热影响区前进侧。在该工艺下最佳回弹时间为8 h,此时回弹率为33.49%。硬度最低点在热影响区,该区域内硬度随时效时间的增加呈递减趋势。
关键词(KeyWords): 铝合金;时效成形;搅拌摩擦焊
基金项目(Foundation): 国家自然科学基金(51105190);; 江西省自然科学基金(CA201103133);; 轻合金科学与技术国防重点学科实验室基金(GF200901007);; 南昌航空大学科研启动基金(EA201003235)
作者(Author): 黎俊初,黎文欢,刘大海,刘鸽平
DOI: 10.13289/j.issn.1009-6264.2012.08.019
参考文献(References):
- [1]Holman M C.Autoclave age forming large aluminum aircraft panels[J].Journal of Mechanical Working Technology,1989,20:477-488.
- [2]许旭东,袁胜,甘忠.时效成形应用研究探索.大型飞机关键技术高层论坛暨中国航空学会2007年年会论文集[C]//深圳:中国航空学会,2007,1-11.
- [3]曾元松,黄遐,黄硕.蠕变时效成形技术研究现状与发展趋势[J].塑性工程学报,2008,15(3):1-8.Zeng Yuan-song,Huang Xia,Huang Shuo.The research situation and the developing tendency of creep age forming technology[J].Journal ofPlasiticity Engineering,2008,15(3):1-8.
- [4]曾元松,黄遐.大型整体壁板成形技术[J].航空学报,2008,29(3):721-727.Zeng Yuan-song,Huang Xia.Forming technologies of large integral panel[J].Acta Aeronautica et Astronautica Sinca,2008,29(3):721-727.
- [5]李劲风,郑子樵,李世晨,等.铝合金时效成形及时效成形铝合金[J].材料导报,2006,20(5):101-103.Li Jin-feng,Zheng Zi-qiao,Li Shi-chen,et al.Age forming of Al alloys and ageformable Al alloys[J].Materials Review,2006,20(5):101-103.
- [6]韩志仁,张凌云,祁桂根.飞机大型蒙皮制造技术现状分析[C]//大型飞机关键技术高层论坛暨中国航空学会2007年学术年会论文集.深圳:中国航空学会,2007.
- [7]Eberl F,Gardiner S,CampanileG,et al.Age formable panels for commercial aircraft[J].Proceedings of the Institution of Mechanical Engineers,Part G:Journal of Aerospace Engineering,2008,222(6):873-886.
- [8]栾国红,关桥.搅拌摩擦焊—革命性的宇航制造新技术[J].航天制造技术,2003,(4):16-23.Luan Guo-hong,Guan Qiao.Stir friction welding-arevolutionary new manufacturing technology in aerospace[J].Aerospace ManufacturingTechnology,2003,(4):16-23.
- [9]黎俊初,陈佳,熊洪淼,等.LY12MO铝合金板时效成形回弹率研究[J].南昌航空大学学报,2008,22(4):68-70.Li Jun-chu,Chen Jia,Xiong Hong-miao,et al.Study on springback of age forming for LY12 MO alloy[J].Journal of Nanchang HangkongUniversity,2008,22(4):68-70.
- [10]中华人民共和国国家标准.GB/T2651-2008,焊接接头拉伸试验方法[S].2008.
- [11]贺幼生.7075铝合金的搅拌摩擦焊组织性能研究[J].株洲工学院学报,2006,20(2):56-58.He You-sheng.A study on friction-stir welds of thick 7075 aluminum plate[J].Journal of Zhuzhou Institute of Technology,2006,20(2):56-58.
- [12]汪建华,姚舜,魏良武,等.搅拌摩擦焊接的传热和力学计算模型[J].焊接学报,2000,21(4):61-64.Wang Jian-hua,Yao Shun,Wei Liang-wu,et al.Thermal and thermo-mechanical modeling of friction stir welding[J].Transactions of the ChinaWelding Institution,2000,21(4):61-64.
- [13]刘宗昌.材料组织结构转变原理[M].北京:冶金工业出版社,2006.
- [14]艾云龙,刘长虹,罗军明.工程材料及成形技术[M].北京:科学出版社,2007.
- [15]王希靖,孙桂苹,张杰,等.焊后热处理对高强铝合金搅拌摩擦焊接头的影响[J].中国有色金属学报,2009,19(3):484-489.Wang Xi-jing,Sun Gui-ping,Zhang Jie,et al.Effects of heat treatment after welding on friction stir welding joints of high-strength aluminum alloy[J].The Chinese Journal of Nonferrous Metals,2009,19(3):484-489.
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