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石墨烯纳米片增强铝镁基复合泡沫的结构与压缩力学性能

刘雨佳 于浩 邹田春 沙军威 杨旭东

刘雨佳, 于浩, 邹田春, 等. 石墨烯纳米片增强铝镁基复合泡沫的结构与压缩力学性能[J]. 复合材料学报, 2023, 40(10): 5892-5901. doi: 10.13801/j.cnki.fhclxb.20221213.003
引用本文: 刘雨佳, 于浩, 邹田春, 等. 石墨烯纳米片增强铝镁基复合泡沫的结构与压缩力学性能[J]. 复合材料学报, 2023, 40(10): 5892-5901. doi: 10.13801/j.cnki.fhclxb.20221213.003
LIU Yujia, YU Hao, ZOU Tianchun, et al. Effect of graphene nanosheets on the pore structure and compressive mechanical properties of aluminum-magnesium matrix composite foams[J]. Acta Materiae Compositae Sinica, 2023, 40(10): 5892-5901. doi: 10.13801/j.cnki.fhclxb.20221213.003
Citation: LIU Yujia, YU Hao, ZOU Tianchun, et al. Effect of graphene nanosheets on the pore structure and compressive mechanical properties of aluminum-magnesium matrix composite foams[J]. Acta Materiae Compositae Sinica, 2023, 40(10): 5892-5901. doi: 10.13801/j.cnki.fhclxb.20221213.003

石墨烯纳米片增强铝镁基复合泡沫的结构与压缩力学性能

doi: 10.13801/j.cnki.fhclxb.20221213.003
基金项目: 中央高校基本科研业务费中国民航大学专项(3122020083)
详细信息
    通讯作者:

    邹田春,博士,副教授,硕士生导师,研究方向复合材料、多孔金属材料 E-mail: zoutianchun@126.com

  • 中图分类号: TB331

Effect of graphene nanosheets on the pore structure and compressive mechanical properties of aluminum-magnesium matrix composite foams

Funds: Basic Research Funds for Central Universities, Special Project of Civil Aviation University of China (3122020083)
  • 摘要: 采用机械球磨结合粉末冶金发泡法制备了石墨烯纳米片(GNSs)增强Al-Mg基复合泡沫(G-AMCFs),研究了GNSs对泡沫Al-Mg泡孔形貌、微观组织及准静态压缩力学性能的影响。结果表明,GNSs的加入增加了气孔的形核位点并使MgO在GNSs周围发生偏析。随着GNSs含量的增加,G-AMCFs的泡孔孔径增大;0.25wt%G-AMCFs的压缩力学性能最优,相比于泡沫Al-Mg,其吸能能力提高了43.6%,压缩强度提高了42.9%,平台应力提高了28.1%,同时表现出良好的韧性变形行为。高含量G-AMCFs(0.75wt%)的泡孔结构发生恶化并导致力学性能降低,但压缩强度仍优于泡沫Al-Mg。G-AMCFs的强化方式主要为弥散强化、载荷传递和沉淀强化。

     

  • 图  1  石墨烯纳米片(GNSs)增强铝镁(Al-Mg)基复合泡沫(G-AMCFs)的制备流程示意图

    Figure  1.  Schematic diagram of the preparation process of graphene nanosheets (GNSs) reinforced aluminum-magnesium (Al-Mg) matrix composite foams (G-AMCFs)

    EDM—Electrical discharge machining

    图  2  Cu@GNSs的SEM图像 (a)、TEM图像 ((b)、(c)) 和TG-DSC曲线 (d)

    Figure  2.  SEM image (a), TEM image ((b), (c)) and TG-DSC curves (d) of Cu@GNSs

    图  3  165 r/min球磨120 min后0.25wt%Cu@GNSs/Al复合粉末的SEM图像

    Figure  3.  SEM images of 0.25wt%Cu@GNSs/Al composite powder after 120 min of 165 r/min ball milling

    图  4  GNSs在0.25wt%G-AMCFs制备过程中的Raman图谱

    Figure  4.  Raman spectra of GNSs during preparation of 0.25wt%G-AMCFs

    图  5  泡沫Al-Mg (AFs) (a)、0.25wt%G-AMCFs (b)、0.50wt%G-AMCFs (c) 和0.75wt%G-AMCFs (d) 的泡孔结构

    Figure  5.  Pore structures of foam Al-Mg (AFs) (a), 0.25wt%G-AMCFs (b), 0.50wt%G-AMCFs (c) and 0.75wt%G-AMCFs (d)

    图  6  AFs (a) 和0.5wt%G-AMCFs (b) 的TEM和EDS图像

    Figure  6.  TEM and EDS images of AFs (a) and 0.5wt%G-AMCFs (b)

    图  7  0.25wt%G-AMCFs (a) 和0.75wt%G-AMCFs (b) 的泡孔表面图像

    Figure  7.  Pore surface images of 0.25wt%G-AMCFs (a) and 0.75wt% G-AMCFs (b)

    图  8  不同GNSs含量的G-AMCFs的压缩应力-应变曲线 (a) 和吸能曲线 (b)

    Figure  8.  Compressive stress-strain curves (a) and energy absorption curves (b) of G-AMCFs with different GNSs contents

    图  9  0.25wt%G-AMCFs ((a)~(d)) 和0.75wt%G-AMCFs ((e)~(h)) 的准静态压缩变形行为:((a), (e)) 应变ε=0%;((b), (f)) ε=5%;((c), (g)) ε=10%;((d), (h)) ε=40%

    Figure  9.  Quasi-static compression deformation behavior of 0.25wt%G-AMCFs ((a)-(d)) and 0.75wt%G-AMCFs ((e)-(h)): ((a), (e)) Strain ε=0%; ((b), (f)) ε=5%; ((c), (g)) ε=10%; ((d), (h)) ε=40%

    图  10  AFs (a)、0.25wt%G-AMCFs ((b), (c)) 复合泡沫断口形貌的SEM图像

    Figure  10.  SEM images of fracture morphology of AFs (a), 0.25wt%G-AMCFs ((b), (c)) composite foams

    图  11  Al4Cu9的HRTEM图像 (a) 和矩形区域的快速傅里叶变换(FFT)图像 (b)

    Figure  11.  HRTEM image (a) of Al4Cu9 and fast fourier transform (FFT) diagram (b) of the rectangular region

    表  1  不同GNSs含量的G-AMCFs的力学性能统计值

    Table  1.   Statistical values of mechanical properties of G-AMCFs with different GNSs contents

    Foamsσs/MPaσpl/MPaW/(MJ·m−3)
    AFs4.95.73.67
    0.25wt%G-AMCFs7.07.95.27
    0.50wt%G-AMCFs7.17.34.69
    0.75wt%G-AMCFs5.87.04.74
    Notes: σs—First maximum stress on the stress-strain curve; σpl—Average compressive stress of the compressive strain interval of 20% to 40%; W—Energy value obtained by the integration of the region from 0 to εd; εd—Densification strain.
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出版历程
  • 收稿日期:  2022-10-21
  • 修回日期:  2022-12-01
  • 录用日期:  2022-12-02
  • 网络出版日期:  2022-12-14
  • 刊出日期:  2023-10-15

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