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Dong Hongbiao, Ji Yongyi, Zhu Jun, et al. AXIAL TENSILE STRENGTH AND FRACTURE NECHANISM OF IN-SITU COMPOSITE Al11La3/Al[J]. Acta Materiae Compositae Sinica, 1994, 11(2): 14-22.
Citation: Dong Hongbiao, Ji Yongyi, Zhu Jun, et al. AXIAL TENSILE STRENGTH AND FRACTURE NECHANISM OF IN-SITU COMPOSITE Al11La3/Al[J]. Acta Materiae Compositae Sinica, 1994, 11(2): 14-22.
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AXIAL TENSILE STRENGTH AND FRACTURE NECHANISM OF IN-SITU COMPOSITE Al11La3/Al

  • Bcijing University of Science and Technology, 100083

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  • Received Date: May 29, 1995
    Abstract
  • The aerial tensile properties and fracture mechanism of in-situ composite Al11La3/Al have been investi,gate;l in the temperature range of 293-693ph.The result is that:the tensil.strength reaches 260 MPa at the norma temperature and:365 MPa at 693K for the alloy under the condition of directioral solidification(G=700K/cm,R=11.1 μm/s).With the study on the tensile process and the fracture morphology,the in-situ composite Al11La3/Al has the same axial tensile fracture mechanism in the temperature range of 293-693K.The fracture of fiber phase Al11La3 the critical factor for the fracture of the composite.The fracture model of tensile test is,elastic deformation,cracks neucleation,interface separation cracka propagation and macrofracture.
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