Investigation of latest generation pulsed fiber laser in dissimilar joining of Al and Mg alloys

Qiong Gao; Sonia Meco; Kehong Wang; Qi Zhou; Shun Guo; Supriyo Ganguly

doi:doi:10.3788/COL201816.061401

Chinese Optics Letters, 2018, 16 (6): 061401, Published Online: Jul. 2, 2018

Investigation of latest generation pulsed fiber laser in dissimilar joining of Al and Mg alloys Download： 554次

Qiong Gao ¹Sonia Meco ²Kehong Wang ^1,*Qi Zhou ¹Shun Guo ¹Supriyo Ganguly ²

Author Affiliations

¹ School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

² Welding Engineering and Laser Processing Centre, Cranfield University, Bedford MK43 0AL, United Kingdom

Figures & Tables

Fig. 1. (a) Schematic representation of the experimental setup; (b) an illustration of the line scanning distance and beam overlap; (c) an illustration of the tensile test sample.

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Fig. 2. (a) SEM picture of the cross section of the weld seam; (b) an EDS mapping picture of the weld seam; (c) a micrograph with a higher magnification of the zone indicated in (b).

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Fig. 3. (a) Microstructure of the weld seam; (b) magnified morphology of the weld seam; (c) the line scanning result.

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Fig. 4. Mg and Al binary phase diagram.

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Fig. 5. (a) Tensile shear strength of Mg–Al joints and substrates; (b) Mg–Al specimen after the tensile shear test; (c) an SEM image of the fractured surface.

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Table1. Chemical Compositions (%, Mass Fraction) of AZ31B and 1050 Alloys

Material	Al	Zn	Mn	Si	Fe	Cu	Ca	Cr	Mg	Other
AZ31B	2.5-3.5	0.6-1.4	0.2	0.1	0.005	0.05	0.04	—	Bal	0.3
1050	Bal	0.050	0.05	0.25	0.4	0.05	—	—	0.05	0.15

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Table2. Composition (%, Atomic Fraction) of the Phases Indicated in Figs. 2(c) and 3(b)

Point	Mg	Al	Possible Phases
1	37	63	$α$ -Al solid solution and ${Al}_{3} {Mg}_{2}$
2	52	48	${Mg}_{17} {Al}_{12}$ and ${Al}_{3} {Mg}_{2}$
3	80	20	$β$ -Mg solid solution and ${Mg}_{17} {Al}_{12}$

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Qiong Gao, Sonia Meco, Kehong Wang, Qi Zhou, Shun Guo, Supriyo Ganguly. Investigation of latest generation pulsed fiber laser in dissimilar joining of Al and Mg alloys[J]. Chinese Optics Letters, 2018, 16(6): 061401.

Investigation of latest generation pulsed fiber laser in dissimilar joining of Al and Mg alloys Download： 554次

Fig. 1. (a) Schematic representation of the experimental setup; (b) an illustration of the line scanning distance and beam overlap; (c) an illustration of the tensile test sample.

Fig. 2. (a) SEM picture of the cross section of the weld seam; (b) an EDS mapping picture of the weld seam; (c) a micrograph with a higher magnification of the zone indicated in (b).

Fig. 3. (a) Microstructure of the weld seam; (b) magnified morphology of the weld seam; (c) the line scanning result.

Fig. 4. Mg and Al binary phase diagram.

Fig. 5. (a) Tensile shear strength of Mg–Al joints and substrates; (b) Mg–Al specimen after the tensile shear test; (c) an SEM image of the fractured surface.

Table1. Chemical Compositions (%, Mass Fraction) of AZ31B and 1050 Alloys

Table2. Composition (%, Atomic Fraction) of the Phases Indicated in Figs. 2(c) and 3(b)

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Investigation of latest generation pulsed fiber laser in dissimilar joining of Al and Mg alloys Download： 554次

Fig. 1. (a) Schematic representation of the experimental setup; (b) an illustration of the line scanning distance and beam overlap; (c) an illustration of the tensile test sample.

Fig. 2. (a) SEM picture of the cross section of the weld seam; (b) an EDS mapping picture of the weld seam; (c) a micrograph with a higher magnification of the zone indicated in (b).

Fig. 3. (a) Microstructure of the weld seam; (b) magnified morphology of the weld seam; (c) the line scanning result.

Fig. 4. Mg and Al binary phase diagram.

Fig. 5. (a) Tensile shear strength of Mg–Al joints and substrates; (b) Mg–Al specimen after the tensile shear test; (c) an SEM image of the fractured surface.

Table1. Chemical Compositions (%, Mass Fraction) of AZ31B and 1050 Alloys

Table2. Composition (%, Atomic Fraction) of the Phases Indicated in Figs. 2(c) and 3(b)

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