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Effect of special microstructure on the mechanical properties of nanocomposite

Authors
Journal
Materials Science and Engineering A
0921-5093
Publisher
Elsevier
Publication Date
Volume
487
Identifiers
DOI: 10.1016/j.msea.2007.10.072
Keywords
  • Nanobelt
  • Dislocation
  • Mechanical Property
  • Microstructure
  • Nanocomposite

Abstract

Abstract Al 2O 3 nanobelts were observed in the material Al 2O 3/SiC μ/SiC n nanocomposite with high-resolution transmission electron microscopy (HRTEM), the forming of ductile nanobelts is helpful for the improvement of fracture toughness. In addition, the special microstructure such as dislocations and compound twins were also observed in the nanocomposite with TEM, the complicated dislocation configurations and the forming of twins in larger SiC particles contributed to the improvement of fracture toughness by dissipating fracture energy. The Al 2O 3/SiC interface bonding was strengthened which also lead to the high mechanical properties of the nanocomposite.

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