稀土改性高强铝微桁架激光增材制造工艺调控

doi:10.7527/S1000-6893.2020.24868

Abstract

Abstract: The lightweight sandwich panel structure shows great potential in aerospace. The Selective Laser Melting (SLM) technology can overcome the limitations of traditional technology and produce the complex lattice structure with high quality. Rare earth element Sc modified Al-Mg alloy was applied as the raw material, and optimization of SLM processing of the Al-Mg-Sc-Zr alloy was conducted. Based on the optimization, SLM processing of Al-Mg-Sc-Zr sandwich panel structure was performed. Results show that the surface quality and metallurgical defects of the Al-Mg-Sc-Zr specimens processed by SLM were highly related to laser parameters. The superior surface morphology (roughness is 13.2 μm) and maximum relative density (99.5%) were obtained with laser power of 400 W and laser scan speed of 800 mm/s. When the scanning speed is low, Al₃Sc precipitations are formed at the bottom of the molten pool of the specimen, and when the scanning speed is too high, the precipitation phase decreases due to the too fast solidification speed, resulting in a decrease in the microhardness of the specimen. With the optimized process parameters, as the laser scan speed increased, the powder stickiness decreased and the weight of the Al-Mg-Sc-Zr sandwich panel structure processed by SLM decreased. The dimensional accuracy of horizontal components and the forming accuracy of truss micro-rods all increase with the increase of scanning speed.

Key words: laser additive manufacturing, selective laser melting, Al-Mg-Sc-Zr alloy, micro-truss lattice structure, processing quality

CLC Number:

V261.8

GU Dongdong, ZHANG Han, LIU Gang, YANG Biqi. Process optimization of additive manufactured sandwich panel structure using rare earth element modified high-performance Al alloy[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(10): 524868-524868.

References

[1] 高航, 李世宠, 付有志, 等. 金属增材制造格栅零件磨粒流抛光[J]. 航空学报, 2017, 38(10):421210. GAO H, LI S C, FU Y Z, et al. Abrasive flow machining of additively manufactured metal grilling parts[J]. Acta Aeronautica et Astronautica Sinica, 2017, 38(10):421210(in Chinese).
[2] 郭鑫鑫, 陈哲涵. 激光增材制造过程数值仿真技术综述[J]. 航空学报, 2021,42(10):524227. GUO X X, CHEN Z H. Numerical simulation of laser additive manufacturing process:A review[J]. Acta Aeronautica et Astronautica Sinica, 2021,42(10):524227(in Chinese).
[3] 卢秉恒, 李涤尘. 增材制造(3D打印)技术发展[J]. 机械制造与自动化, 2013, 42(4):1-4. LU B H, LI D C. Development of the additive manufacturing (3D printing) technology[J]. Machine Building & Automation, 2013, 42(4):1-4(in Chinese).
[4] 王华明. 高性能大型金属构件激光增材制造:若干材料基础问题[J]. 航空学报, 2014, 35(10):2690-2698. WANG H M. Materials' fundamental issues of laser additive manufacturing for high-performance large metallic components[J]. Acta Aeronautica et Astronautica Sinica, 2014, 35(10):2690-2698(in Chinese).
[5] 林鑫, 黄卫东. 高性能金属构件的激光增材制造[J]. 中国科学:信息科学, 2015, 45(9):1111-1126. LIN X, HUANG W D. Laser additive manufacturing of high-performance metal components[J]. Scientia Sinica (Informationis), 2015, 45(9):1111-1126(in Chinese).
[6] 袁经纬, 李卓, 汤海波, 等. 热处理对激光增材制造TC4合金耐蚀性及室温压缩蠕变性能的影响[J]. 航空学报, 2021,42(10):524390. YUAN J W, LI Z, TANG H B, et al. Effect of heat treatment on corrosion resistance and room temperature compression creep of LAMed TC4 alloy[J]. Acta Aeronautica et Astronautica Sinica, 2021,42(10):524390. (in Chinese)
[7] 杨永强, 陈杰, 宋长辉, 等. 金属零件激光选区熔化技术的现状及进展[J]. 激光与光电子学进展, 2018, 55(1):011401. YANG Y Q, CHEN J, SONG C H, et al. Current status and progress on technology of selective laser melting of metal parts[J]. Laser & Optoelectronics Progress, 2018, 55(1):011401(in Chinese).
[8] 顾冬冬, 张红梅, 陈洪宇, 等. 航空航天高性能金属材料构件激光增材制造[J]. 中国激光, 2020, 47(5):0500002. GU D D, ZHANG H M, CHEN H Y, et al. Laser additive manufacturing of high-performance metallic aerospace components[J]. Chinese Journal of Lasers, 2020, 47(5):0500002(in Chinese).
[9] LI C L, LEI H S, ZHANG Z, et al. Architecture design of periodic truss-lattice cells for additive manufacturing[J]. Additive Manufacturing, 2020, 34:101172.
[10] GANGIREDDY S, KOMARASAMY M, FAIERSON E J, et al. High strain rate mechanical behavior of Ti-6Al-4V octet lattice structures additively manufactured by selective laser melting (SLM)[J]. Materials Science and Engineering:A, 2019, 745:231-239.
[11] 郭怡东, 马玉娥, 李佩谣. 增材制造钛合金微桁架夹芯板低速冲击响应[J]. 航空学报, 2021, 42(2):423820. GUO Y D, MA Y E, LI P Y. Low velocity impact response of additively manufactured titanium alloy micro-truss sandwich panels[J]. Acta Aeronautica et Astronautica Sinica, 2021, 42(2):423820(in Chinese).
[12] GU D D, ZHANG H, DAI D H, et al. Anisotropic corrosion behavior of Sc and Zr modified Al-Mg alloy produced by selective laser melting[J]. Corrosion Science, 2020, 170:108657.
[13] LI R D, WANG M B, YUAN T C, et al. Selective laser melting of a novel Sc and Zr modified Al-6.2 Mg alloy:Processing, microstructure, and properties[J]. Powder Technology, 2017, 319:117-128.
[14] UDDIN S Z, MURR L E, TERRAZAS C A, et al. Processing and characterization of crack-free aluminum 6061 using high-temperature heating in laser powder bed fusion additive manufacturing[J]. Additive Manufacturing, 2018, 22:405-415.
[15] ANWAR A B, PHAM Q C. Selective laser melting of AlSi₁₀Mg:Effects of scan direction, part placement and inert gas flow velocity on tensile strength[J]. Journal of Materials Processing Technology, 2017, 240:388-396.
[16] SEIDMAN D N, MARQUIS E A, DUNAND D C. Precipitation strengthening at ambient and elevated temperatures of heat-treatable Al(Sc) alloys[J]. Acta Materialia, 2002, 50(16):4021-4035.
[17] SPIERINGS A B, DAWSON K, HEELING T, et al. Microstructural features of Sc-and Zr-modified Al-Mg alloys processed by selective laser melting[J]. Materials & Design, 2017, 115:52-63.
[18] SHI Y J, YANG K, KAIRY S K, et al. Effect of platform temperature on the porosity, microstructure and mechanical properties of an Al-Mg-Sc-Zr alloy fabricated by selective laser melting[J]. Materials Science and Engineering:A, 2018, 732:41-52.
[19] SPIERINGS A B, DAWSON K, KERN K, et al. SLM-processed Sc- and Zr-modified Al-Mg alloy:Mechanical properties and microstructural effects of heat treatment[J]. Materials Science and Engineering:A, 2017, 701:264-273.
[20] ZHANG H, GU D D, YANG J K, et al. Selective laser melting of rare earth element Sc modified aluminum alloy:Thermodynamics of precipitation behavior and its influence on mechanical properties[J]. Additive Manufacturing, 2018, 23:1-12.
[21] CROTEAU J R, GRIFFITHS S, ROSSELL M D, et al. Microstructure and mechanical properties of Al-Mg-Zr alloys processed by selective laser melting[J]. Acta Materialia, 2018, 153:35-44.
[22] LI R D, WANG M B, LI Z M, et al. Developing a high-strength Al-Mg-Si-Sc-Zr alloy for selective laser melting:Crack-inhibiting and multiple strengthening mechanisms[J]. Acta Materialia, 2020, 193:83-98.
[23] GU D D, HAGEDORN Y C, MEINERS W, et al. Densification behavior, microstructure evolution, and wear performance of selective laser melting processed commercially pure titanium[J]. Acta Materialia, 2012, 60(9):3849-3860.
[24] LI R D, CHEN H, ZHU H B, et al. Effect of aging treatment on the microstructure and mechanical properties of Al-3.02Mg-0.2Sc-0.1Zr alloy printed by selective laser melting[J]. Materials & Design, 2019, 168:107668.

Process optimization of additive manufactured sandwich panel structure using rare earth element modified high-performance Al alloy

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 9

Recommended Articles

Metrics

Comments

[1]	YANG Jiankai, GU Dongdong, GE Qing, TAN Chenchen, WEN Yu. Support layout and precise forming mechanism of aluminum alloy for laser additive manufacturing [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(4): 525331-525331.
[2]	QU Ruizhi, HUANG Liangpei, XIAO Dongming. Numerical simulation of melt pool evolution and metal spattering characterization during selective laser melting processing [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(4): 525240-525240.
[3]	WANG Maosong, DU Yulei. Research progress of additive manufacturing of TiAl alloys [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(7): 625263-625263.
[4]	GUO Xinxin, CHEN Zhehan. Numerical simulation of laser additive manufacturing process: A review [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(10): 524227-524227.
[5]	CAO Longchao, ZHOU Qi, HAN Yuanfei, SONG Bo, NIE Zhenguo, XIONG Yi, XIA Liang. Review on intelligent monitoring of defects and process control of selective laser melting additive manufacturing [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(10): 524790-524790.
[6]	FENG Yiqi, XIE Guoyin, ZHANG Bi, QIAO Guowen, GAO Shang, BAI Qian. Influence of laser power and surface condition on balling behavior in selective laser melting [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(12): 423089-423089.
[7]	LIN Huijie, SHEN Lida, JIANG Jinhui, XIE Deqiao, LIANG Huixin, FAN Qinchun. Simulation analysis of features of overhanging structure fabricated by selective laser melting [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(7): 421897-421897.
[8]	GU Yizhuo, LI Min, LI Yanxia, WANG Shaokai, ZHANG Zuoguang. Progress on manufacturing technology and process theory of aircraft composite structure [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(8): 2773-2797.
[9]	WANG Huaming. Materials’ Fundamental Issues of Laser Additive Manufacturing for High-performance Large Metallic Components [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(10): 2690-2698.