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

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稀土改性高强铝微桁架激光增材制造工艺调控

顾冬冬¹, 张晗¹, 刘刚², 杨碧琦²

1. 南京航空航天大学材料科学与技术学院, 南京 210016;
2. 上海卫星装备研究所, 上海 200240

收稿日期:2020-10-13 修回日期:2020-11-07 发布日期:2020-12-14
通讯作者: 顾冬冬 E-mail:Dongdonggu@nuaa.edu.cn
基金资助:
国家自然科学基金重点项目（51735005）；国家重点研发计划（2016YFB1100101，2018YFB1106302）；江苏省第十五批"六大人才高峰"创新人才团队项目（TD-GDZB-001）；国家自然科学基金创新研究群体项目（51921003）

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

GU Dongdong¹, ZHANG Han¹, LIU Gang², YANG Biqi²

1. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. Shanghai Institute of Spacecraft Equipment, Shanghai 200240, China

Received:2020-10-13 Revised:2020-11-07 Published:2020-12-14
Supported by:
National Natural Science Foundation of China (51735005); National Key Research and Development Program (2016YFB1100101, 2018YFB1106302); The 15th Batch of "Six Talents Peaks" Innovative Talents Team Program (TD-GDZB-001); National Natural Science Foundation of China for Creative Research Groups (51921003)

摘要/Abstract

摘要： 微桁架夹芯板点阵轻量化结构在航空航天领域有重要应用，选区激光熔化（SLM）增材制造技术可克服传统工艺局限性，高质量一体化成形复杂点阵结构。以稀土Sc改性高强Al-Mg合金为对象，采用SLM工艺对其进行工艺优化试验，并基于优化结果对微桁架夹芯板开展一体化成形工艺调控研究。研究结果表明：SLM成形Al-Mg-Sc-Zr合金表面质量、冶金缺陷等随激光参数发生显著变化，在激光功率400 W、扫描速度800 mm/s的条件下获得较高表面质量（粗糙度为13.2 μm）及致密度（相对密度为99.5%）。当扫描速度较低时试件熔池底部形成一次Al₃Sc析出相，而当扫描速度过高时因凝固速度过快析出相减少，导致试件显微硬度降低。在优化工艺区间内，随激光扫描速度增加SLM成形Al-Mg-Sc-Zr微桁架夹芯板粘粉比例下降，构件质量随之减轻；水平方向构件尺寸精度、桁架微杆成形精度均随扫描速度增加而增加。

关键词: 激光增材制造, 选区激光熔化, 铝镁钪锆合金, 微桁架点阵结构, 成形质量

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

中图分类号:

V261.8

顾冬冬, 张晗, 刘刚, 杨碧琦. 稀土改性高强铝微桁架激光增材制造工艺调控[J]. 航空学报, 2021, 42(10): 524868-524868.

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.

参考文献

[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.

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稀土改性高强铝微桁架激光增材制造工艺调控

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

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