Microstructure and thermal stability of an ultrafine Al/Al2O3 composite

被引：14
|
作者：
Yang, ZQ [1 ]
He, LL [1 ]
Chen, J [1 ]
Cong, HT [1 ]
Ye, HQ [1 ]
机构：
[1] Chinese Acad Sci, Met Res Inst, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH | 2003年 / 18卷 / 02期
关键词：
D O I：
10.1557/JMR.2003.0038
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Studies were carried out on the microstructure and thermal stability of an ultrafine Al/Al2O3 composite with high strength and low density. Transmission electron microscopy indicated that Al2O3 shells remained undeformed below 550 degreesC, which limited grain growth of Al. Both transmission electron microscopy and x-ray diffraction analysis indicated that no obvious grain growth of Al with time occurred upon annealing at 620 degreesC. After almost all the alumina shells were destroyed following annealing at 620 degreesC, the Al2O3 fragments with various morphologies distributed in the material could still limit the migration of Al grain boundaries to increase the thermal stability of the material. After Al melted and resolidified, the grain sizes of Al were still about 200 run. The bulk composite sample showed good dimensional stability. Even if the Al grains melted, the network of Al2O3 fragments kept the sample from deforming due to the wetting of Al2O3 network with liquid Al.
引用
收藏
页码：272 / 278
页数：7
相关论文
共 50 条
  • [1] Microstructure and thermal stability of an ultrafine Al/Al2O3 composite
    Zhiqing Yang
    Lianlong He
    Ji Chen
    Hongtao Cong
    Hengqiang Ye
    [J]. Journal of Materials Research, 2003, 18 : 272 - 278
  • [2] Mechanism of thermal stability for Al/Al2O3 nano-composite
    Yang, Zhiqing
    Chen, Ji
    He, Lianlong
    Wu, Bo
    Fan, Xueshu
    Cong, Hongtao
    Ye, Hengqiang
    [J]. Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research, 2002, 16 (04): : 361 - 364
  • [3] Thermal stability of γ-Al2O3/α-Al2O3 mesoporous membranes
    Lafarga, D
    Lafuente, A
    Menendez, F
    Santamaria, J
    [J]. JOURNAL OF MEMBRANE SCIENCE, 1998, 147 (02) : 173 - 185
  • [4] Microstructure and Tribocorrosion Behavior of Al2O3/Al Composite Coatings: Role of Al2O3 Addition
    Jiangbo Cheng
    Yunyun Ge
    Bishi Wang
    Lianhua Zhang
    Xianlong Hu
    Shen Hong
    Xiubing Liang
    Xiancheng Zhang
    [J]. Journal of Thermal Spray Technology, 2020, 29 : 1741 - 1751
  • [5] THE EFFECT OF THERMAL EXPOSURE ON THE MICROSTRUCTURE AND FIBER MATRIX INTERFACE OF AN AL2O3/AL COMPOSITE
    HALL, IW
    BARRAILLER, V
    [J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1986, 17 (06): : 1075 - 1080
  • [6] Synthesis and microstructure of nanostructured Al/Al2O3(H)-composite
    Veith, M
    Faber, S
    Hempelmann, R
    Janssen, S
    Prewo, J
    Eckerlebe, H
    [J]. JOURNAL OF MATERIALS SCIENCE, 1996, 31 (08) : 2009 - 2017
  • [7] Thermal shock properties of Ti(Al,O)/Al2O3 and TiAl(O)/Al2O3 composite coatings
    Salman, Asma
    Gabbitas, Brian
    Zhang, Deliang
    [J]. STRUCTURAL INTEGRITY AND FAILURE, 2011, 275 : 47 - 50
  • [8] Characterization of microstructure and properties of Al–Al3Zr–Al2O3 composite
    ANUP MANDAL
    KARABI DAS
    SIDDHARTHA DAS
    [J]. Bulletin of Materials Science, 2016, 39 : 913 - 924
  • [9] Formation and microstructure of β/β"-Al2O3 film on a spinel-α-Al2O3 composite substrate
    Wen, ZY
    Lin, ZX
    Jiang, DL
    [J]. JOURNAL OF MATERIALS SCIENCE LETTERS, 1998, 17 (04) : 323 - 325
  • [10] On the thermal stability of ultrafine-grained Al stabilized by in-situ amorphous Al2O3 network
    Balog, Martin
    Hu, Tao
    Krizik, Peter
    Castro Riglos, Maria Victoria
    Saller, Brandon D.
    Yang, Hanry
    Schoenung, Julie M.
    Lavernia, Enrique J.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 648 : 61 - 71
12345