以镁焊丝为填充材料,对镁/镀锌钢异种合金进行单、双光束激光熔钎焊试验研究,分析不同工艺参数对焊缝成形的影响规律,获得不同热源作用方式下的界面形态规律及其对界面强度的影响.结果表明:采用单、双光束进行填丝熔钎焊均可获得较满意的外观成形:单光束容易存在未钎合现象,焊接过程不够稳定,而双光束具有更好的温度分布,容易提高润湿铺展能力.剪切强度测试结果表明,单、双光束最大的接头效率分别达到30.9％和42.4％,焊趾处裂纹的存在是导致接头失效的主要原因.
参考文献
| [1] | 孟岩,潘建亮.汽车轻量化材料的应用[J].汽车与配件,2010(18):24-27. |
| [2] | LIU P;LI Y J;GENG H R;WANG J .Microstructure characteristics in TIG welded joint of Mg/A1 dissimilar materials[J].Materials Letters,2007,61:1288-1291. |
| [3] | Liming Liu;Xujing Liu;Shunhua Liu .Microstructure of laser-TIG hybrid welds of dissimilar Mg alloy and Al alloy with Ce as interlayer[J].Scripta materialia,2006(4):383-386. |
| [4] | L.-M. Liu;H.-Y. Wang;Z.-D. Zhang .The analysis of laser weld bonding of Al alloy to Mg alloy[J].Scripta materialia,2007(6):473-476. |
| [5] | Wang Juan;Li Yajiang;Liu Peng;Geng Haoran .Microstructure and XRD analysis in the interface zone of Mg/Al diffusion bonding[J].Journal of Materials Processing Technology,2008(1/3):146-150. |
| [6] | SONG J L;LIN S B;YANG C L;MA G C LIU H .Spreading behavior and microstructure characteristics of dissimilar metals TIG welding-brazing of aluminum alloy to stainless steel[J].Materials Science and Engineering A,2009,509:31-40. |
| [7] | LEE W B;SCHMUECKER M;MERCARDO U A;MERCARDO U A,BIALLAS G,JUNG S B .Inteffacial reaction in steel-aluminum joints made by friction stir welding[J].Scripta Materialia,2006,55:355-358. |
| [8] | TORKAMANY M J;TAHAMTAN S;SABBAGHZADEH J .Dissimilar welding of carbon steel to 5754 aluminum alloy by Nd:YAG pulsed laser[J].Materials & Design,2010,31:458v465. |
| [9] | QI X D;SONG G .Interracial structure of the joints between magnesium alloy and mild steel with nickel as interlayer by hybrid laser-TIG welding[J].Materials & Design,2010,31:605-609. |
| [10] | L.M. Liu;X. Zhao .Study on the weld joint of Mg alloy and steel by laser-GTA hybrid welding[J].Materials Characterization,2008(9):1279-1284. |
| [11] | Liu, LM;Qi, XD .Effects of copper addition on microstructure and strength of the hybrid laser-TIG welded joints between magnesium alloy and mild steel[J].Journal of Materials Science,2009(21):5725-5731. |
| [12] | LIU L M;QI X D .Strengthening effect of nickel and copper interlayers on hybrid laser-TIG welded joints between magnesium alloy and mild steel[J].Materials & Design,2010,31:3960-3963. |
| [13] | Y. G. Miao;D. F. Han;J. Z. Yao .Microstructure and interface characteristics of laser penetration brazed magnesium alloy and steel[J].Science and Technology of Welding and Joining,2010(2):97-103. |
| [14] | MIAO Y G;HAN D F;YAO J Z;LI F .Effect of laser offsets on joint performance of laser penetration brazing for magnesium alloy and steel[J].Materials & Design,2010,31:3121-3126. |
| [15] | Y. C. Chen;K. Nakata .Effect of surface states of steel on microstructure and mechanical properties of lap joints of magnesium alloy and steel by friction stir welding[J].Science and Technology of Welding and Joining,2010(4):293-298. |
| [16] | S. JANA;Y. HOVANSKJ;G.J. GRANT .Friction Stir Lap Welding of Magnesium Alloy to Steel: A Preliminary Investigation[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2010(12):3173-3182. |
| [17] | L. LIU;L. XIAO;J.C. FENG;Y.H. TIAN;S.Q. ZHOU;Y. ZHOU .The Mechanisms of Resistance Spot Welding of Magnesium to Steel[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2010(10):2651-2661. |
| [18] | 陈树海,李俐群,陈彦宾.铝/钛异种合金激光熔钎焊接头界面特性[J].中国有色金属学报,2008(06):991-996. |
| [19] | 陈树海,李俐群,陶汪,陈彦宾,刁旺战.电流辅助钛/铝异种合金激光熔钎焊的特性[J].中国有色金属学报,2009(11):1942-1947. |
| [20] | 冯吉才,王亚荣,张忠典.镁合金焊接技术的研究现状及应用[J].中国有色金属学报,2005(02):165-178. |
| [21] | ZHANG H T;FENG J C;HE P;HACKL H .Interracial microstructure and mechanical properties of aluminium-zinc-coated steel joints made by a modified metal inert gas welding-brazing process[J].Materials Characterization,2007,58:588-592. |
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