对2219铝合金进行了双轴肩搅拌摩擦焊工艺试验,详细分析了焊缝成型、接头组织形态及力学性能.结果表明:2219铝合金双轴肩搅拌摩擦焊缝正反面成型美观,内部无缺陷,几乎无焊缝减薄.接头宏观形貌呈典型的“哑铃型”,焊缝上下表面宽,中间略窄.从显微组织角度看,接头的焊核区、热机影响区、热影响区等组织特征与常规搅拌摩擦焊相似.双轴肩搅拌摩擦焊接头显微硬度分布趋势与常规搅拌摩擦焊接头相似,均为典型的“W”型,但双轴肩搅拌摩擦焊接头不存在各层异性.接头力学性能试验表明:双轴肩搅拌摩擦焊接头抗拉强度达到了318.3 MPa,延伸率为5.5％.接头断口形貌呈典型的韧性断裂.
参考文献
| [1] | Edwards R;Sylva G.Recent advances in welding of aluminium alloys using a self-reacting pin tool (SRPT) approach with application examples[A].Georgia,USA,2005 |
| [2] | 韩文妥,许鸿吉,李光,董春林,栾国红.几种新型搅拌摩擦焊技术[J].航空制造技术,2008(21):48-51. |
| [3] | 张健,李光,李从卿,栾国红.2219-T4铝合金双轴肩FSW与常规FSW接头性能对比研究[J].焊接,2008(11):50-52. |
| [4] | Thomas W M;Wiesner C S.Recent developments of FSW technologies:Evaluation of root defects,compostite refractory toos for steel joining and one-pass welding of thick sections using self-reacting bobbin tools[A].Pine Mountain,GA,United states,2008 |
| [5] | [OL].http://search.nasa.gov/Self-Reacting Fricting Stir nolding for Aluminium Alloy Circumferontial neld Applicatings |
| [6] | P L Threadgill;M M Z Ahmed;J P Martin.The use of bobbin tools for friction stir welding of aluminium alloys[A].Berlin,Germany,2009 |
| [7] | Marie F;Allehaux D;Esmiller B.Development of the Bobbin Tool technique on various aluminium alloys[A].Metz,France,2004 |
| [8] | Judy Schneider;Arthur Nunes;Michael Brendel.The influence of friction stir weld tool form and welding parameters on weld structure and properties:Nugget bulge in self-reacting friction stir welds[A].Wolfsburg,Germany,2011 |
| [9] | 赵衍华,林三宝,贺紫秋,吴林.2014铝合金搅拌摩擦焊接过程数值模拟[J].机械工程学报,2006(07):92-97. |
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