SU Hui, LU: Bo-lin. Research of Tension Fracture Process of Al-Si Hypereutectic Alloy[J]. Development and Application of Materials, 2008, 23(2): 22-23,26. DOI: 10.19515/j.cnki.1003-1545.2008.02.006
Citation: SU Hui, LU: Bo-lin. Research of Tension Fracture Process of Al-Si Hypereutectic Alloy[J]. Development and Application of Materials, 2008, 23(2): 22-23,26. DOI: 10.19515/j.cnki.1003-1545.2008.02.006

Research of Tension Fracture Process of Al-Si Hypereutectic Alloy

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  • Received Date: January 13, 2008
  • Available Online: March 29, 2024
  • Fracture mechanism of two-phase alloy is discussed based on the observation of the fracture process of Al-Si hypereutectic alloy by using optical microscopy.It is found that the fracture of Al-Si hypereutectic alloy occurs firstl on the nook of primary silicon and with the increase of outer forces,the crack expands to the internal of primary silicon and the direction changes at the phase boundary and expands along the phase boundary.Analysis suggests that the bonding strength of the phase boundary is the weakest and crack propagation occurs preferably in the weak for Al-Si two-phase alloy.
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