采用伸缩式搅拌头对25 mm板厚2219-T6铝合金进行搅拌摩擦焊,在多道补焊时避免搅拌头轴肩的二次下压量造成的底部焊穿.对25 mm板厚2219-T6搅拌摩擦焊焊缝的微观组织、材料缺失型缺陷及弱连接型缺陷进行观察.结果表明:焊缝沿厚度方向分为轴肩影响区和搅拌针影响区,焊接参数的变化与这两区域中缺陷的产生存在一定关系,焊缝中的材料缺失型缺陷遵循一定的体积守恒关系.利用伸缩式搅拌头制备不同尺寸的焊缝根部未焊透缺陷,发现未焊透的深度与焊缝抗拉强度呈非线性关系.在统一的焊接参数规范下,调整搅拌针伸出长度进行多道焊,研究多道补焊工艺对焊缝组织性能的影响.
参考文献
| [1] | R. Nandan;T. DebRoy;H.K.D.H. Bhadeshia .Recent advances in friction-stir welding - Process, weldment structure and properties[J].Progress in materials science,2008(6):980-1023. |
| [2] | Mishra RS;Ma ZY .Friction stir welding and processing[J].Materials Science & Engineering, R. Reports: A Review Journal,2005(1/2):III-0. |
| [3] | 邢丽,柯黎明,周细应,刘鸽平.防锈铝LF6的固态塑性连接工艺[J].中国有色金属学报,2002(06):1162-1166. |
| [4] | Judy Schneider;Ronald Beshears;Arthur C. Nunes Jr. .Interfacial sticking and slipping in the friction stir welding process[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(0):297-304. |
| [5] | 张传臣,陈芙蓉.厚板高强铝合金焊接发展现状及展望[J].电焊机,2007(07):6-11. |
| [6] | 周鹏展,钟掘,贺地求.7A52铝合金厚板搅拌摩擦焊[J].中国有色金属学报,2006(06):964-969. |
| [7] | Y. G. Kim;H. Fujii;T. Tsumura .Three defect types in friction stir welding of aluminum die casting alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):250-254. |
| [8] | Kumar K;Kailas SV .The role of friction stir welding tool on material flow and weld formation[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):367-374. |
| [9] | Bo Li;Yifu Shen .The investigation of abnormal particle-coarsening phenomena in friction stir repair weld of 2219-T6 aluminum alloy[J].Materials & design,2011(7):3796-3802. |
| [10] | William J. Arbegast .A flow-partitioned deformation zone model for defect formation during friction stir welding[J].Scripta materialia,2008(5):372-376. |
| [11] | 王希靖,韩晓辉,李常锋,包孔,郭瑞杰.厚铝合金板搅拌摩擦焊塑性金属不同深度的水平流动状况[J].中国有色金属学报,2005(02):198-204. |
| [12] | 王希靖,达朝炳,李晶,张忠科.搅拌摩擦焊缝中的洋葱环形成分析[J].中国有色金属学报,2006(10):1672-1677. |
| [13] | ARBEGAST W J;HARTLEY P J.Friction stir weld technology development at Lockheed Martin Michoud space system-An overview[A].Georgia,1998:541-546. |
| [14] | Yutaka S. Sato;Fumie Yamashita;yusuke Sugiura;Seung Hwan C. Park;Hiroyuki Kokawa .FIB-assisted TEM study of an oxide array in the root of a friction stir welded aluminum alloy[J].Scripta materialia,2004(3):365-369. |
| [15] | H.J. Liu;Y.C. Chen;J.C. Feng .Effect of zigzag line on the mechanical properties of friction stir welded joints of an Al-Cu alloy[J].Scripta materialia,2006(3):231-234. |
| [16] | SATO Y S;HWAN S;PARK C;KOKAWA H .Microstructural factors governing hardness in friction stir welds of solid-solution-hardened Al alloys[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2001,32:3033-3041. |
| [17] | 林肇琦.有色金属材料学[M].沈阳:东北工学院出版社,1986:6-8. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%