对2A12-T3和2A11-O铝合金进行了超声波焊接,研究了不同超声波焊接工艺参数对焊接界面结合状况的影响.采用扫描电镜、电子背散射衍射和透射电镜研究了焊接界面的组织结构.结果表明,当超声波焊接振幅为30μm,焊接时间为0.2s,焊接界面结合状况较好,焊接界面的线性焊接密度接近100%.氩气保护也会对线性焊接密度产生影响.当焊接振幅为15μm时,氩气保护可提高线性焊接密度;但当焊接振幅为30μm,氩气保护对线性焊接密度无明显影响.超声波焊接过程中,焊接界面上产生波纹和漩涡状塑性流动,发生动态回复和连续动态再结晶,形成由位错缠结、位错胞、亚晶和细小晶粒组成的焊接界面组织.
参考文献
[1] | KOU S D.Welding Metallurgy[M].New Jersey:John Wiley & Sons,2002.126-128.,2002. |
[2] | 崔俊华,柯黎明,刘文龙,郭正华,赵刚要,方平.搅拌摩擦焊接全过程热力耦合有限元模型[J].材料工程,2014(12):11-17. |
[3] | 黄嘉,季英萍,秦丽晔,吴素君.GH4169合金惯性摩擦焊焊接接头疲劳裂纹扩展性能[J].航空材料学报,2013(06):45-50. |
[4] | 曾纯,朱政强,陈长青,等 .超声波金属焊接中的温度与应力分布[J].上海交通大学学报,2010,44(10):54-57.ZENG C,ZHU Z Q,CHEN C Q,et al.Temperature and stress sistribution in ultrasonic metal welding[J].Journal of Shanghai Jiao Tong University,2010,44(10):54-57.,2010. |
[5] | DANIELS HPC .Ultrasonic welding[J].Ultrasonics,1965,3(4):190-196.,1965. |
[6] | KONG C Y,SOAR R C,DICKENS P M .Characterisation of aluminium alloy 6061 for the ultrasonic consolidation process[J].Materials Science and Engineering A,2003,363:99-106.,2003. |
[7] | JANAKI R G D,YANG Y,STUCKER B E .Effect of process parameters on bond formation during ultrasonic consolidation of aluminum alloy 3003[J].Journal of Manufacturing Systems,2006,25(3):221-237.,2006. |
[8] | BAKAVOS D,PRANGNELL P B .Mechanisms of joint and microstructure formation in high power ultrasonic spot welding 6111 aluminium automotive sheet[J].Materials Science and Engineering A,2010,527(23):6320-6334.,2010. |
[9] | 熊志林,朱政强,吴宗辉,王小龙.6061铝合金超声波焊接接头组织与性能研究[J].热加工工艺,2011(17):130-132,135. |
[10] | 涂益民,邱然锋,石红信,于华,张柯柯.轻金属材料超声波焊接的研究现状[J].轻合金加工技术,2011(01):16-20. |
[11] | YANG Y,JANAKI R G D,STUCKER B E .Bond formation and fiber embedment during ultrasonic consolidation[J].Journal of Materials Processing Technology,2009,209(10):4915-4924.,2009. |
[12] | JAHN R,COOPER R,WILKOSZ D .The effect of Anvil geometry and welding energy on microstructures in ultrasonic spot welds of AA6111-T4[J].Metallurgical and Materials Transactions A,2007,38(3):570-583.,2007. |
[13] | HUMPHREYS F J,HATHERLY M.Recrystallization and Related Annealing Phenomena[M].Oxford:Pergamon Press,2004.415-416.,2004. |
[14] | SU J Q,NELSON T W,MISHRA R,et al .Microstructural investigation of friction stir welded 7050 T651 aluminium[J].Acta Materialia,2003,51(3):713-729.,2003. |
[15] | MARIANI E,GHASSEMIEH E .Microstructure evolution of 6061 O Al alloy during ultrasonic consolidation:An insight from electron backscatter diffraction[J].Acta Materialia,2010,58(7):2492-2503.,2010. |
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%