Characterization of EBPVD micro-layer composites and simulation of its internal stress state

  • Shi Li-ping 
  • He Xiao-dong 


Based on the basic operating principal and the technology characteristic of electron beam physical vapor deposition(EBPVD) technique, EBPVD was used to prepare the micro-layer composites. The effect on the substrate preheating temperature was taken into accounts and the finite element analysis package ANSYS was used to simulate the internal stress field and the potential displacement changing tendency. The results show that one of the most important quality factors on the judgment of micro-layer composites is the adhesion between the substrate and the deposition layers as well as among the different deposition layers. Besides the existance of temperature gradient through the thickness of layers, the main reason for the internal stress in micro-layer composites is the mismatch of various properties of the layer and the substrate of different thermal expansions and crystal lattice types. With the increase of substrate preheating temperature, the inter-laminar shear stress also takes on a tendency of increase but the axial residual stress decrease.

Key words

micro-layer composites electron beam physical vapor deposition residual stress field finite element analysis 

CLC number

TF123.1+41 TF124.8+


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Copyright information

© Central South University 2005

Authors and Affiliations

  • Shi Li-ping 
    • 1
  • He Xiao-dong 
    • 1
  1. 1.Center for Composite Materials and StructureHarbin Institute of TechnologyHarbinChina

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