Liquation and Crystallization Cracks in Aluminum Alloy AA2024 during Selective Laser Melting

Abstract:

In this work we studied the microstructure and microhardness of standard AA2024 alloy and AA2024 alloy with the addition of 1.5% Y after pulsed laser melting (PLM) and selective laser melting (SLM). The SLM process was carried out with a 300 W power and 0.1 m/s laser scanning speed. A dispersed microstructure without the formation of crystallization cracks and low liquation of alloying elements was obtained in Y-modified AA2024 aluminum alloy. Eutectic Al₃Y and Al₈Cu₄Y phases were detected in Y-modified AA2024 aluminum alloy. It is led to a decrease in the formation of crystallization cracks The uniform distribution of alloying elements in the yttrium-modified alloy had a positive effect on the quality of the laser melting zone (LMZ) and microhardness.

• Periodical: Defect and Diffusion Forum (Volume 410)
• Pages: 203-208
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.410.203
• Online since: August 2021
• Authors: I.S. Loginova*, N.A. Popov, Alexey N. Solonin
• Keywords: Aluminium Alloy, Liquation, Microhardness, Selective Laser Melting, Solidification Cracks

References

[1] I.I. Novikov, V.S. Zolotorevskiy, V.K. Portnoy, Metallovedeniye, v. 2, MISiS, Moscow, (2009).

[2] Z. Hu, Y. Qi, S. Gao, X. Nie, H. Zhang, H. Zhu, X. Zeng, Aging responses of an Al-Cu alloy fabricated by selective laser melting, Additive Manufacturing. 37 (2021) 101635.

DOI: 10.1016/j.addma.2020.101635

[3] M. Karg, B. Ahuja, S. Kuryntsev, A. Gorunov, M. Schmidt, Processability of high strength aluminium-copper alloys AW-2022 and 2024 by laser beam melting in powder bed, in: 25th Solid Freeform Fabrication Symposium in Austin, Texas, 2014, pp.420-436.

DOI: 10.3390/mi8010023

[4] H. Zhang, H. Zhu, T. Qi, Z. Hu, X. Zeng, Selective laser melting of high strength Al–Cu–Mg alloys: Processing, microstructure and mechanical properties, Mat. Sci. Eng. A-Struct. 656 (2016) 47-54.

DOI: 10.1016/j.msea.2015.12.101

[5] J. Wang, Z. Liu, S. Bai, J. Cao, J. Zhao, L. Luo, J. Li, Microstructure evolution and mechanical properties of the electron-beam welded joints of cast Al–Cu–Mg–Ag alloy, Mat. Sci. Eng. A-Struct. 801 (2021) 140363.

DOI: 10.1016/j.msea.2020.140363

[6] V.S. Zolotorevskiy, N.A. Belov, Metallovedeniye Liteynykh Alyuminiyevykh Splavov, MISiS, Moscow, (2005).

[7] A.V. Pozdnyakov, V.S. Zolotorevskiy, M.G. Khomutov, Goryachelomkost' Liteynykh Alyuminiyevykh Splavov, MISiS, Moscow, (2014).

[8] J. Zhang, J. Gao, B. Song, L. Zhang, C. Han, C. Cai, K. Zhou, Y. Shi, A novel crack-free Ti-modified Al-Cu-Mg alloy designed for selective laser melting, Additive Manufacturing. 38 (2021) 101829.

DOI: 10.1016/j.addma.2020.101829

[9] H. Zhang, H. Zhu, X. Nie, J. Yin, Z. Hu, X. Zeng, Effect of zirconium addition on crack, microstructure and mechanical behavior of selective laser melted Al-Cu-Mg alloy, Scripta Mater. 134 (2017) 6-10.

DOI: 10.1016/j.scriptamat.2017.02.036

[10] S Geng, P. Jiang, X. Shao, G. Mi, H. Wu, Y. Ai, C. Wang, C. Han, R. Chen, W. Liu, Comparison of solidification cracking susceptibility between Al-Mg and Al-Cu alloys during welding: A phase-field study, Scripta Mater. 150 (2018) 120-124.

DOI: 10.1016/j.scriptamat.2018.03.013

[11] A. Malikov, I. Vitoshkin, A. Orishich, A. Filippov, E. Karpov, Microstructure and mechanical properties of laser welded joints of Al-Cu-Li and Ti-Al-V alloys, J. Manuf. Process. 53 (2020) 201-212.

DOI: 10.1016/j.jmapro.2020.02.010

[12] X. Nie, H. Zhang, H. Zhu, Z. Hu, L. Ke, X. Zeng, Analysis of processing parameters and characteristics of selective laser melted high strength Al-Cu-Mg alloys: From single tracks to cubic samples, J. Mater. Process. Tech. 256 (2018) 69-77.

DOI: 10.1016/j.jmatprotec.2018.01.030

[13] H. Zhang, X. Nie, H. Zhu, X. Zeng, C.Yang, Study on high strength Al-Cu-Mg alloy fabricated by selective laser melting, Zhongguo Jiguang/Chinese Journal of Lasers. 43 (2016) 0503007.

DOI: 10.3788/cjl201643.0503007

[14] H. Zhang, H. Zhu, X. Nie, T. Qi, Z. Hu, X.Zeng, Fabrication and heat treatment of high strength Al-Cu-Mg alloy processed using selective laser melting Proceedings of SPIE - The International Society for Optical Engineering. 9738 (2016) 97380X.

DOI: 10.1117/12.2211362

[15] H. Zhang, H. Zhu, T. Qi, Z. Hu, X. Zeng, Selective laser melting of high strength Al-Cu-Mg alloys: Processing, microstructure and mechanical properties, Mat. Sci. Eng. A-Struct. 656 (2016) 47-54.

DOI: 10.1016/j.msea.2015.12.101

[16] X. Nie, H. Zhang, H. Zhu, Z. Hu, X. Zeng, The effect of processing parameter on zirconium modified Al-Cu-Mg alloys fabricated by selective laser melting, in: Proceedings of the 29th Annual International Solid Freeform Fabrication Symposium, Austin, Texas, USA, 2018, pp.1246-1252.

[17] A.V. Pozdniakov, R.Yu. Barkov, Microstructure and materials characterization of the novel Al-Cu-Y alloy, Mater. Sci. Tech. Ser. 34 (2018) 1489-1496.

DOI: 10.1080/02670836.2018.1460536

[18] N.T. Aboulkhair, M. Simonelli, L. Parry, I. Ashcroft, C. Tuck, R. Hague, 3D printing of aluminium alloys: Additive manufacturing of aluminium alloys using selective laser melting, Prog. Mater. Sci. 106 (2019) 100578.

DOI: 10.1016/j.pmatsci.2019.100578

[19] I.M. Kusoglu, B. Gökce, S. Barcikowski, Research trends in laser powder bed fusion of Al alloys within the last decade, Additive Manufacturing. 36 (2020) 101489.

DOI: 10.1016/j.addma.2020.101489

[20] A.V. Pozdniakov, R.Y. Barkov, S.M. Amer, V.S. Levchenko, A.D. Kotov, A.V. Mikhaylovskaya, Microstructure, mechanical properties and superplasticity of the Al–Cu–Y–Zr alloy, Mat. Sci. Eng. A-Struct. 758 (2019) 28-35.

DOI: 10.1016/j.msea.2019.04.118

[21] H. Zhao, D.R. White, T. Debroy, Current issues and problems in laser welding of automotive aluminum alloys, Int. Mater. Rev. 44 (1999) 238-266.

DOI: 10.1179/095066099101528298

[22] M. Jandaghi, P. Parvin, M.J. Torkamany, J. Sabbaghzadeh, Alloying element losses in pulsed Nd: YAG laser welding of stainless steel 316, J. Phys. D: Appl. Phys. 41 (2008) 235503.

DOI: 10.1088/0022-3727/41/23/235503

[23] Information on https://app.aws.org/wj/supplement/WJ_1983_02_s53.pdf.