彭玉炜,杨伟,应国民,徐翩

• 1:南昌航空大学轻合金加工科学与技术国防重点学科实验室

摘要(Abstract)：

采用高真空感应熔炼与铜模喷铸相结合的方法制备了非平衡凝固Al-0.3Sc-0.3Zr合金，研究了深冷和时效处理对快冷合金微观组织、显微硬度及析出行为的影响。结果表明：快冷合金中的Sc和Zr元素基本固溶到α-Al基体中，仅有微量初生相形成；深冷处理后，应力碎断效应导致合金的晶粒发生显著细化，局部出现非常细小的再结晶组织；时效处理能有效促进快冷及快冷+深冷合金中析出相的析出。经300℃时效70 min后，Al-0.3Sc-0.3Zr快冷合金的硬度由原始的32.31 HV0.2增至74.57 HV0.2。深冷处理可以加快Al_3(Sc, Zr)相的析出，300℃时效峰值时间缩短为50 min,合金的显微硬度高达78.09 HV0.2,相比原始快冷合金提高了142%。

关键词(KeyWords)： Al-0.3Sc-0.3Zr合金;非平衡凝固;深冷处理;晶粒细化;时效析出

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52061032,52261014);; 江西省教育厅资助项目(DA202203113)

作者(Author): 彭玉炜,杨伟,应国民,徐翩

DOI: 10.13289/j.issn.1009-6264.2023-0413

参考文献(References)：

• [1] Knipling K,Karnesky R,Lee C,et al.Precipitation evolution in Al-0.1Sc,Al-0.1Zr and Al-0.1Sc-0.1Zr (at.%) alloys during isochronal aging[J].Acta Materialia,2010,58(15):5184-5195.
• [2] Song M,He Y H.Investigation of primary Al3(Sc,Zr) particles in Al-Sc-Zr alloys[J].Materials Science and Technology,2011,27(1):431-433.
• [3] Knipling K,Seidman D,Dunand D.Ambient-and high-temperature mechanical properties of isochronally aged Al-0.06Sc,Al-0.06Zr and Al-0.06Sc-0.06Zr (at.%) alloys[J].Acta Materialia,2011,59(3):943-954.
• [4] Guo Z Y,Zhao G,Chen X G.Effects of two-step homogenization on precipitation behavior of Al3Zr dispersoids and recrystallization resistance in 7150 aluminum alloy[J].Materials Characterization,2015,102:122-130.
• [5] Knipling K,Dunand D.Creep resistance of cast and aged Al-0.1Zr and Al-0.1Zr-0.1Ti (at.%) alloys at 300-400 ℃[J].Scripta Materialia,2008,59(4):387-390.
• [6] Tolley A,Radmilovic V,Dahmen U.Segregation in Al3(Sc,Zr) precipitates in Al-Sc-Zr alloys[J].Scripta Materialia,2005,52(7):621-625.
• [7] Yang Y,Licavoli J,Hackney S,et al.Coarsening behavior of precipitate Al3(Sc,Zr) in supersaturated Al-Sc-Zr alloy via melt spinning and extrusion[J].Journal of Materials Science,2021,56(18):11114-11136.
• [8] 文艺，姜涛，邬冠华，等.3D打印两相钛合金组织性能研究现状[J].失效分析与预防，2016,11(1):42-46.WEN Yi,JIANG Tao,WU Guan-hua,et al.Research status on microstructures and properties of two-phase titanium alloys by 3D printing[J].Failure Analysis and Prevention,2016,11(1):42-46.
• [9] Toshio H,Keisuke O,Kazuki Y,et al.Strip casting of Al-4.7%Mg with impurity Fe using a single roll caster with a scraper[J].Materials Science Forum,2022,6674:115-122.
• [10] Jie J C,Zheng Z L,Liu S C,et al.Solidification structure evolution of immiscible Al-Bi-Sn alloys at different cooling rates[J].Journal of Materials Research,2019,34(14):2563-2571.
• [11] 朱堂葵，杨伟，吴宗锴，等.铜模内径对亚快速凝固K424合金析出相的影响[J].材料热处理学报，2021,42(3):80-88.ZHU Tang-kui,YANG Wei,WU Zong-kai,et al.Effect of copper-mould diameter on precipitation phase of sub-rapid solidified K424 alloy[J].Transactions of Materials and Heat Treatment,2021,42(3):80-88.
• [12] 甘吉松，张大童，梁光兴，等.快速凝固+热挤压制备Al-10.7Zn-2.4Mg-0.9Cu合金的组织和性能[J].材料热处理学报，2020,41(1):27-32.GAN Ji-song,ZHANG Da-tong,LIANG Guang-xing,et al.Microstructure and properties of Al-10.7Zn-2.4Mg-0.9Cu alloy prepared by rapid solidification and hot extrusion[J].Transactions of Materials and Heat Treatment,2020,41(1):27-32.
• [13] 刘亮，欧阳晟，杨伟，等.深冷处理对非平衡凝固Mg-6Al-1Y合金组织及硬度的影响[J].材料热处理学报，2019,40(12):39-46.LIU Liang,OUYANG Sheng,YANG Wei,et al.Effects of cryogenic treatment on microstructure and hardness of non-equilibrium solidified Mg-6Al-1Y alloy[J].Transactions of Materials and Heat Treatment,2019,40(12):39-46.
• [14] Puchkov Y,Dung M,Plokhikh A,et al.Effect of cryogenic treatment and thermal shock on residual stresses,structure and properties of alloy D16[J].Metal Science and Heat Treatment,2023,64(11/12):720-728.
• [15] Araghchi M,Mansouri H,Vafaei R.Influence of cryogenic thermal treatment on mechanical properties of an Al-Cu-Mg alloy[J].Materials Science and Technology,2018,34(4):468-472.
• [16] Wang Y H,Liao B,Liu J H,et al.Effects of deep cryogenic treatment on the solid-state phase transformation of Cu-Al alloy in cooling process[J].Phase Transitions,2012,85(7):650-657.
• [17] Hao Y G,Liu W.Workability improvement on Al alloy inhomogeneous blanks by cryogenic forming[J].Materials and Manufacturing Processes,2023,38(4):416-426.
• [18] Sonar T,Lomte S,Gogte C.Cryogenic treatment of metal-A review[J].Materials Today:Proceedings,2018,5(11):25219-25228.
• [19] 代卫丽，刘宝琪，朱建武，等.深冷处理对5083铝合金的组织及性能的影响[J].低温工程，2023(3):57-64.DAI Wei-li,LIU Bao-qi,ZHU Jian-wu,et al.Effect of cryogenic treatment on microstructures and properties of 5083 aluminum alloys[J].Cryogenics,2023(3):57-64.
• [20] 刘灵，杨伟，刘亮，等.深冷处理对非平衡凝固Mg-6Al-1Y合金组织的影响[J].特种铸造及有色合金，2021,41(10):1250-1254.LIU Ling,YANG Wei,LIU Liang,et al.Influences of cryogenics treatment on the non-equilibrium solidified Mg-6Al-1Y alloy[J].Special Casting and Nonferrous Alloys,2021,41(10):1250-1254.
• [21] Zhang W,Xing Y,Jia Z H,et al.Effect of minor Sc and Zr addition on microstructure and properties of ultra-high strength aluminum alloy[J].Transactions of Nonferrous Metals Society of China,2014,24(12):3866-3871.
• [22] Guan R,Jin H,Jiang W,et al.Quantitative contributions of solution atoms,precipitates and deformation to microstructures and properties of Al-Sc-Zr alloys[J].Transactions of Nonferrous Metals Society of China,2019,29(5):907-918.
• [23] 杨伟，殷海眯，商景利，等.SiC颗粒参与下快冷镁合金异质形核与高温晶粒长大[J].中国有色金属学报，2017,27(2):243-250.YANG Wei,YIN Hai-mi,SHANG Jing-li,et al.Heterogeneous nucleation and grain growth at high temperature for quenched magnesium alloy containing SiC particle[J].The Chinese Journal of Nonferrous Metals,2017,27(2):243-250.
• [24] Tao C,Cheng X N,Li Z Q,et al.Mechanism of cryogenic,solid solution and aging compound heat treatment of die-cast Al alloys considering microstructure variation[J].Rare Metals,2023,42(9):3130-3138.
• [25] Mohan K,Suresh J,Ramu P,et al.Microstructure and mechanical behavior of Al 7075-T6 subjected to shallow cryogenic treatment[J].Journal of Materials Engineering and Performance,2016,25(6):2185-2194.
• [26] 高文林，王向杰，陈军洲，等.深冷处理对7A99铝合金峰值时效析出相的影响[J].稀有金属材料与工程，2019,48(4):1155-1160.GAO Wen-lin,WANG Xiang-jie,CHEN Jun-zhou,et al.Influences of deep cryogenic treatment on precipitated phase of 7A99 aluminium alloy[J].Rare Metal Materials and Engineering,2019,48(4):1155-1160.

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