Effect of Laser Welding on Properties of Dissimilar Joint of Al-Mg-Si and Al-Mn Aluminum Alloys

材料科学技术（英）, 2010, 26(3): 276-282.

^1, , ^2, , ^3, , ^4, , ^5,

1.Department of Mechanical Engineering, National Chiao-Tung University, Hsinchu 30049, Taiwan;National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

2.Department of Mechanical Engineering, National Chiao-Tung University, Hsinchu 30049, Taiwan

3.National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

4.National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

5.National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan; Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University, Hsinchu 30013,Taiwan

Effect of Laser Welding on Properties of Dissimilar Joint of Al-Mg-Si and Al-Mn Aluminum Alloys

C.C. Chang ^1, , C.P. Chou ^2, , S.N. Hsu ^3, , G. Y. Hsiung ^4, , J.R. Chen ^5,

1.Department of Mechanical Engineering, National Chiao-Tung University, Hsinchu 30049, Taiwan;National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

2.Department of Mechanical Engineering, National Chiao-Tung University, Hsinchu 30049, Taiwan

3.National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

4.National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

5.National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan; Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University, Hsinchu 30013,Taiwan

Keywords： Laser welding

This study discusses the welding properties for the components of an aluminum-alloy ultra-high vacuum chamber and beam position monitor (BPM). The welding parameters include the modes of laser output (pulsed wave and continuous wave), welding speed, shield gas flow, welding bead structure, and focusing distance. The results showed that the welding defect rate of the pulsed wave type was larger than that of the continuous wave type. The crack in the welding bead reduced with decreasing welding speed. The fusion penetration of the welding bead was higher when the focusing distance was long enough to deepen into the welding material. Weld morphology during the experimental process revealed the proper flow of shield gas.The adaptability design of the welding bead structure in the preceding processes had more effect on overall welding structure and morphology.

参考文献

[1]	E. Cicala;G. Duffet;H. Andrzejewski .Hot cracking in Al-Mg-Si alloy laser welding - operating parameters and their effects[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):1-9.
[2]	A. Haboudou;P. Peyre;A. B. Vannes .Reduction of porosity content generated during Nd:YAG laser welding of A356 and AA5083 aluminium alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):40-52.

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Effect of Laser Welding on Properties of Dissimilar Joint of Al-Mg-Si and Al-Mn Aluminum Alloys

参考文献