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Chin. Opt. Lett.
 Home  List of Issues    Issue 06 , Vol. 16 , 2018    10.3788/COL201816.061401


Investigation of latest generation pulsed fiber laser in dissimilar joining of Al and Mg alloys
Qiong Gao1, Sonia Meco2, Kehong Wang1, Qi Zhou1, Shun Guo1, and Supriyo Ganguly2
1 School of Material Science and Engineering, [Nanjing University of Science and Technology], Nanjing 21 0094, China
2 Welding Engineering and Laser Processing Centre, [Cranfield University], Bedford MK43 0AL, United Kingdom

Chin. Opt. Lett., 2018, 16(06): pp.061401

DOI:10.3788/COL201816.061401
Topic:Lasers and laser optics
Keywords(OCIS Code): 140.3390  140.7090  140.3538  160.3900  

Abstract
Dissimilar metal joining of magnesium to aluminum was investigated using the latest generation nanosecond pulsed fiber laser. The tensile shear test shows that the average tensile shear strength of a joint was 86 MPa, which was 75% of the aluminum substrate. The weld interface exhibited a mixture phase (Mg solid solution and Mg17Al12) that improves the strength and toughness of the joint. A thin Mg–Al intermetallic compound layer was formed on both sides of the weld seam toward the Al side. Fracture occurred toward the Al substrate side rather than the Mg–Al interface, indicating a high joining strength at the weld interface.

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Received:2018/1/16
Accepted:2018/4/3
Posted online:2018/5/28

Get Citation: Qiong Gao, Sonia Meco, Kehong Wang, Qi Zhou, Shun Guo, and Supriyo Ganguly, "Investigation of latest generation pulsed fiber laser in dissimilar joining of Al and Mg alloys," Chin. Opt. Lett. 16(06), 061401(2018)

Note: This work was supported by the Native Defense Scientific Research Fund of China (No. JSCG2017606B005).



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