Microstructure and Properties of Laser Additive Jointing Heterogeneous Aluminum Alloys

Guang Yang; Wenbei Zou; Chao Wang; Xiangming Wang

doi:10.3788/CJL202249.2202010

Chinese Journal of Lasers, Volume. 49, Issue 22, 2202010(2022)

Microstructure and Properties of Laser Additive Jointing Heterogeneous Aluminum Alloys

Guang Yang^1、*, Wenbei Zou¹, Chao Wang², and Xiangming Wang³

Author Affiliations

¹School of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang 110136, Liaoning, China

²Key Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang 110136, Liaoning, China

³AVIC Shenyang Aircraft Design Institute, Shenyang 110035, Liaoning, China

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Figures & Tables(12)

Fig. 1. LAJ diagram of heterogeneous aluminum alloy and sampling diagram of tensile parts

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Fig. 2. Schematic of tensile sample size

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Fig. 3. Microstructures of LAJ substrate. (a) SLM AlSi10Mg aluminum alloy substrate; (b) WAAM 2024 aluminum alloy substrate

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Fig. 4. YOZ cross-section microstructures of AlSi10Mg powder jointing specimens. (a) Macrostructure of jointing area; (b) jointing area of SLM AlSi10Mg aluminum alloy substrate; (c) middle part of jointing area; (d) jointing area of WAAM 2024 aluminum alloy substrate

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Fig. 5. YOZ cross-section microstructures of 2024 powder jointing specimens. (a) Macrostructure of jointing area; (b) jointing area of SLM AlSi10Mg aluminum alloy substrate; (c) middle part of jointing area; (d) jointing area of WAAM 2024 aluminum alloy substrate

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Fig. 6. EDS analysis results of LAJ area. (a1)－(a3)AlSi10Mg powder jointing specimens; (b1)－(b3)2024 powder jointing specimens

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Fig. 7. Microhardness curves of LAJ specimens. (a) AlSi10Mg powder jointing specimens; (b) 2024 powder jointing specimens

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Fig. 8. Stress－strain curves of tensile samples. (a) Heterogeneous aluminum alloy substrates; (b) LAJ specimens

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Fig. 9. Photos of LAJ tensile samples

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Fig. 10. Tensile properties of LAJ specimens

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Fig. 11. Fractography of tensile samples. (a)(b) AlSi10Mg powder jointing specimens; (c)(d) 2024 powder jointing specimens

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Table 1. Chemical compositions of powder (mass fraction, %)
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Table 1. Chemical compositions of powder (mass fraction, %)
Element Si Mg Mn Cu Fe Zn Ti Cr Al
AlSi10Mg 9.00－11.00 0.20－0.50 ≤0.40 －－－－－ Bal.
2024 0.50 1.20－1.80 0.30－0.90 3.80－4.90 0.50 0.25 0.15 0.10 Bal.

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Guang Yang, Wenbei Zou, Chao Wang, Xiangming Wang. Microstructure and Properties of Laser Additive Jointing Heterogeneous Aluminum Alloys[J]. Chinese Journal of Lasers, 2022, 49(22): 2202010

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