激光选区熔化成形Inconel718合金的显微组织以及电化学和摩擦学性能
Microstructure and Electrochemical and Tribological Properties of Inconel718 Alloy Formed by Selective Laser Melting
摘 要
以气雾化法制备的Inconel718合金粉末为原料，采用激光选区熔化（SLM）技术制备了Inconel718合金，研究了合金的显微组织及性能，并与锻造态合金进行对比。结果表明：SLM成形合金垂直于成形方向的组织呈现明显的带状熔化道，平行于成形方向的组织呈现鱼鳞状熔池的界面结构，晶粒为穿过熔池边界的柱状晶；SLM成形合金平行于成形方向的显微硬度（346 HV）略大于垂直于成形方向（324 HV）；与锻造态合金相比，SLM成形合金在质量分数3.5% NaCl溶液中的阻抗曲线半径更大，自腐蚀电位与钝化电位更高，自腐蚀电流密度低2个数量级，耐腐蚀性能更优；当载荷为3~10 N时，成形合金的摩擦因数在0.5~0.8，磨损率在5.4×10-5~14.3×10-5 mm-3·N-1·m-1，均低于锻造态合金。
Inconel718合金
电化学性能
摩擦磨损性能
selective laser melting
Inconel718 alloy
electrochemical performance
friction and wear property
Abstract
The Inconel718 alloy was prepared by laser selective melting (SLM) technique with Inconel718 alloy powder prepared by aerosol method as raw materials. The microstructure and properties of the alloy were studied and compared with those of the forged alloy. The results show that the microstructure of the SLM formed alloy perpendicular to the forming direction presented obvious banded melting channels, and that parallel to the forming direction showed the interface structure of fish-scale molten pool; the grains were columnar crystals passing through the boundary of molten pool. The microhardness of the SLM formed alloy parallel to the forming direction (346 HV) was slightly greater than that perpendicular to the forming direction (324 HV). Compared with those of the forged alloy, the SLM formed alloy exhibited a larger impedance curve radius in 3.5wt%NaCl solution, higher free-corrosion potential and passivation potential, and lower free-corrosion current density by two orders of magnitude, indicating better corrosion resistance. The friction coefficient of the SLM formed alloy was 0.5-0.8, and the wear rate was 5.4×10-5-14.3×10-5 mm-3·N-1·m-1 under the load of 3-10 N, which were all lower than those of the forged alloy.
中图分类号 TG132.3 DOI 10.11973/jxgccl202309010
所属栏目 材料性能及应用
基金项目
收稿日期 2022/7/13
修改稿日期 2023/7/13
网络出版日期
作者单位点击查看
备注鲁志杰(1997-),男,河南信阳人,硕士研究生
引用该论文: LU Zhijie,GUO Huoming,LI Dexiang,FU Bin,LIU Xinlong,HE Chenggang,LIU Jihua,XU Zhibiao. Microstructure and Electrochemical and Tribological Properties of Inconel718 Alloy Formed by Selective Laser Melting[J]. Materials for mechancial engineering, 2023, 47(9): 57～64
鲁志杰,郭火明,李德香,付斌,刘新龙,何成刚,刘吉华,徐志彪. 激光选区熔化成形Inconel718合金的显微组织以及电化学和摩擦学性能[J]. 机械工程材料, 2023, 47(9): 57～64
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【22】HUANG W P, YANG J J, YANG H H, et al.Heat treatment of Inconel 718 produced by selective laser melting:Microstructure and mechanical properties[J].Materials Science and Engineering:A, 2019, 750:98-107.
【23】TENG Q, LI S A, WEI Q S, et al.Investigation on the influence of heat treatment on Inconel 718 fabricated by selective laser melting:Microstructure and high temperature tensile property[J].Journal of Manufacturing Processes, 2021, 61:35-45.
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【33】刘秀波, 王勉, 乔世杰, 等.TA2合金激光熔覆钛基自润滑耐磨复合涂层的高温摩擦学性能[J].摩擦学学报, 2018, 38(3):283-290. LIU B, WANG M, QIAO S J, et al.High temperature tribological properties of laser cladding titanium matrix self-lubricating wear resistant composite coating on TA2 alloy[J].Tribology, 2018, 38(3):283-290.
【2】赵高升, 刘秀军, 张志明, 等.金属零件3D打印技术研究进展[J].化工新型材料, 2018, 46(8):42-45. ZHAO G S, LIU X J, ZHANG Z M, et al.Research progress of metal part manufactured by 3D printing[J].New Chemical Materials, 2018, 46(8):42-45.
【3】KOURAYTEM N, CHANUT R A, WATRING D S, et al. Dynamic-loading behavior and anisotropic deformation of pre- and post-heat-treated IN718 fabricated by laser powder bed fusion[J]. Additive Manufacturing, 2020, 33:101083.
【4】于忠斌, 张中标, 尹婷婷, 等.金属3D打印技术概述[J].机械管理开发, 2022, 37(1):266-268. YU Z B, ZHANG Z B, YIN T T, et al.Overview of metal 3D printing technology[J].Mechanical Management and Development, 2022, 37(1):266-268.
【5】DREXLER A, OBERWINKLER B, PRIMIG S, et al.Experimental and numerical investigations of the γ″ and γ' precipitation kinetics in alloy 718[J].Materials Science and Engineering:A, 2018, 723:314-323.
【6】CHLEBUS E, GRUBER K, KU AZ'G NICKA B, et al.Effect of heat treatment on the microstructure and mechanical properties of Inconel 718 processed by selective laser melting[J].Materials Science and Engineering:A, 2015, 639:647-655.
【7】LIU F C, LIN X, HUANG C P, et al.The effect of laser scanning path on microstructures and mechanical properties of laser solid formed nickel-base superalloy Inconel 718[J].Journal of Alloys and Compounds, 2011, 509(13):4505-4509.
【8】KASPEROVICH G, HAUSMANN J.Improvement of fatigue resistance and ductility of TiAl6V4 processed by selective laser melting[J].Journal of Materials Processing Technology, 2015, 220:202-214.
【9】LIN Y C, YANG H, HE D G, et al.A physically-based model considering dislocation-solute atom dynamic interactions for a nickel-based superalloy at intermediate temperatures[J].Materials & Design, 2019, 183:108122.
【10】DU J, LYU X, DONG J, et al. Research progress of wrought superalloys in China[J]. Acta Metallurgica Sinica, 2019, 55(9):1115-1132.
【11】POLLOCK T M, TIN S.Nickel-based superalloys for advanced turbine engines:Chemistry, microstructure and properties[J].Journal of Propulsion and Power, 2006, 22(2):361-374.
【12】陈仕奇, 刘联平.原始粉末粒度对GH4169合金选区激光熔化成形件组织和性能的影响[J].航空制造技术, 2021, 64(9):14-20. CHEN S Q, LIU L P.Effects of particle size on microstructures and properties of GH4169 alloy by SLM additive manufacturing[J].Aeronautical Manufacturing Technology, 2021, 64(9):14-20.
【13】刘延星, 孙振忠, 张玉勋, 等.扫描间隙对激光粉床熔融GH4169合金微观组织及硬度的影响[J].精密成形工程, 2021, 13(1):84-87. LIU Y X, SUN Z Z, ZHANG Y X, et al.Effect of scanning gap on microstructure and hardness of GH4169 alloy melted by laser powder bed[J].Journal of Netshape Forming Engineering, 2021, 13(1):84-87.
【14】刘岩松, 那明博, 牟义强, 等.选区激光熔化成形Inconel718合金的研究现状[J].特种铸造及有色合金, 2020, 40(12):1348-1352. LIU Y S, NA M B, MU Y Q, et al.Research status of Inconel718 alloy formed by selective laser melting[J].Special Casting & Nonferrous Alloys, 2020, 40(12):1348-1352.
【15】王亮, 王红英, 姚龙辉, 等.选区激光熔化Inconel 718合金的熔池形态与组织[J].特种铸造及有色合金, 2021, 41(3):270-274. WANG L, WANG H Y, YAO L H, et al.Molten-pool morphology and microstructure of selective laser melted Inconel 718 alloy[J].Special Casting & Nonferrous Alloys, 2021, 41(3):270-274.
【16】万宏远.选区激光熔化成形Inconel 718合金组织结构与力学行为研究[D].合肥:中国科学技术大学, 2020. WAN H Y.Study on microstructure and mechanical behavior of Inconel 718 alloy formed by selective laser melting[D].Hefei:University of Science and Technology of China, 2020.
【17】MOUSSAOUI K, RUBIO W, MOUSSEIGNE M, et al.Effects of selective laser melting additive manufacturing parameters of Inconel 718 on porosity, microstructure and mechanical properties[J].Materials Science and Engineering:A, 2018, 735:182-190.
【18】邵帅, 任雪彭, 李昊卿, 等.激光选区熔化与传统加工IN718合金的组织与性能比较[J].有色金属工程, 2022, 12(6):23-30. SHAO S, REN X P, LI H Q, et al.Comparison of microstructure and properties of IN718 alloy processed by selective laser melting and conventional processing[J].Nonferrous Metals Engineering, 2022, 12(6):23-30.
【19】汤雁冰, 沈新旺, 刘志红, 等.激光选区熔化Inconel 718合金在NaOH溶液中的腐蚀行为[J].金属学报, 2022, 58(3):324-333. TANG Y B, SHEN X W, LIU Z H, et al.Corrosion behaviors of selective laser melted Inconel 718 alloy in NaOH solution[J].Acta Metallurgica Sinica, 2022, 58(3):324-333.
【20】李星.激光选区熔化Inconel 718高温合金组织和性能研究[D].上海:上海大学, 2019. LI X.Study on microstructure and properties of Inconel 718 superalloy by selective laser melting[D].Shanghai:Shanghai University, 2019.
【21】AMATO K N, GAYTAN S M, MURR L E, et al.Microstructures and mechanical behavior of Inconel 718 fabricated by selective laser melting[J].Acta Materialia, 2012, 60(5):2229-2239.
【22】HUANG W P, YANG J J, YANG H H, et al.Heat treatment of Inconel 718 produced by selective laser melting:Microstructure and mechanical properties[J].Materials Science and Engineering:A, 2019, 750:98-107.
【23】TENG Q, LI S A, WEI Q S, et al.Investigation on the influence of heat treatment on Inconel 718 fabricated by selective laser melting:Microstructure and high temperature tensile property[J].Journal of Manufacturing Processes, 2021, 61:35-45.
【24】XU X, SU F H, LI Z J.Microstructure and tribological behaviors of MoN-Cu nanocomposite coatings sliding against Si3N4 ball under dry and oil-lubricated conditions[J].Wear, 2019, 434/435:202994.
【25】SU F H, CHEN G F, SUN J F.Synthesis of hydrogenated DLC film by PECVD and its tribocorrosion behaviors under the lubricating condition of graphene oxide dispersed in water[J].Tribology International, 2019, 130:1-8.
【26】LIU W P, DUPONT J N.Effects of melt-pool geometry on crystal growth and microstructure development in laser surface-melted superalloy single crystals[J].Acta Materialia, 2004, 52(16):4833-4847.
【27】MCLOUTH T D, BEAN G E, WITKIN D B, et al.The effect of laser focus shift on microstructural variation of Inconel 718 produced by selective laser melting[J].Materials & Design, 2018, 149:205-213.
【28】宁永权, 姚泽坤, 郭鸿镇, 等.等温锻造对IN718合金组织和性能的影响[J].热加工工艺, 2007, 36(21):65-67. NING Y Q, YAO Z K, GUO H Z, et al.Effect of isothermal forging on microstructure and mechanical properties of IN718 alloy[J].Hot Working Technology, 2007, 36(21):65-67.
【29】BERGANT M, WERNER T, MADIA M, et al.Short crack propagation analysis and fatigue strength assessment of additively manufactured materials:An application to AISI 316L[J].International Journal of Fatigue, 2021, 151:106396.
【30】刘红利, 刘晓红, 吉利, 等.高温氧化处理前后Inconel 718高温合金摩擦学性能的探究[J].摩擦学学报, 2018, 38(3):274-282. LIU H L, LIU X H, JI L, et al.Wide temperature range tribological property of Inconel 718 high-temperature alloy[J].Tribology, 2018, 38(3):274-282.
【31】黄雪红, 季德生, 赵军.Inconel 718与硬质合金摩擦磨损特性的实验研究[J].润滑与密封, 2011, 36(3):89-93. HUANG X H, JI D S, ZHAO J.Experimental study on the friction and wear properties of Inconel 718/carbide[J].Lubrication Engineering, 2011, 36(3):89-93.
【32】CHEN Y P, CAI Y, YUAN C, et al.The effects of load on the microstructure and wear behavior of Co-27Cr-22Fe alloy processed by high-temperature nitriding[J].Journal of Materials Research and Technology, 2023, 25:3007-3021.
【33】刘秀波, 王勉, 乔世杰, 等.TA2合金激光熔覆钛基自润滑耐磨复合涂层的高温摩擦学性能[J].摩擦学学报, 2018, 38(3):283-290. LIU B, WANG M, QIAO S J, et al.High temperature tribological properties of laser cladding titanium matrix self-lubricating wear resistant composite coating on TA2 alloy[J].Tribology, 2018, 38(3):283-290.
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