在大气环境中,对Mg-Zn-Al钎料进行超声振动作用下的铺展,超声时间分别为1,2,3,4s,并与钎剂作用下的钎料铺展行为进行对比.采用体视显微镜观察钎料在超声及钎剂作用下的铺展形貌.采用光学显微镜观察钎料铺展初始端、铺展末端及铺展后钎料的微观组织形貌.结果表明:超声振动作用下的Mg-Zn-Al钎料沿基体表面作受迫铺展,声空化作用于液态钎料产生的冲击波可以破碎基体表面的氧化膜,使液态钎料与母材发生润湿,母材溶解的深度仅有0.12mm.超声时间为2s时,钎料铺展面积最大.超声声空化作用破碎液态钎料在凝固期间产生的α-Mg固溶相及Mg-Zn共晶相,使铺展后的钎料显微组织得到细化.
参考文献
[1] | Improving the Soldering of Magnesium Alloys[J].Welding Journal,20069(9):48-51. |
[2] | 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(2):165-178. |
[3] | F. Czerwinski.The oxidation behaviour of an AZ91D magnesium alloy at high temperatures[J].Acta materialia,200210(10):2639-2654. |
[4] | K. BOBZIN;E. LUGSCHEIDER;R. ERNST;D. JAGER;A. SCHLEGEL;J. ROSING.A Look at the Development of Magnesium-based Filler Metals[J].Welding Journal,20083(3):38-40. |
[5] | D. M. jacobson;G. Humpston.Fluxless soldering[J].International Materials Reviews,20065(5):313-328. |
[6] | P. T. VIANCO;F. M. HOSKING;J. A. REJENT.Ultrasonic Soldering for Structural and Electronic Applications[J].Welding Journal,199611(11):343s-355s. |
[7] | Bernhard Wielage;Silke Miicklich;Thomas Grand.Corrosion behaviour of soldered joints of magnesium alloys and dissimilar materials[J].Mikrochimica Acta: An International Journal for Physical and Chemical Methods of Analysis,20071/2(1/2):151-157. |
[8] | Jiuchun Yan;Zhiwu Xu;Lei Shi;Xing Ma;Shiqin Yang.Ultrasonic assisted fabrication of particle reinforced bonds joining aluminum metal matrix composites[J].Materials & design,20111(1):343-347. |
[9] | Hamid R. Faridi;Jack H. Devletian;Hue P. Le.A new look at flux-free ultrasonic soldering[J].Welding Journal,20009(9):41-45. |
[10] | Toru Nagaoka;Yoshiaki Morisada;Masao Fukusumi;Tadashi Takemoto.Joint strength of aluminum ultrasonic soldered under liquidus temperature of Sn-Zn hypereutectic solder[J].Journal of Materials Processing Technology,200911(11):5054-5059. |
[11] | 薛松柏;陈文华;吕晓春;钱乙余.LY12铝合金氧化膜与钎剂的反应机制[J].中国有色金属学报,2004(4):543-547. |
[12] | G. I. Eskin.Broad prospects for commercial application of the ultrasonic (cavitation) melt treatment of light alloys[J].Ultrasonics sonochemistry,20013(3):319-325. |
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