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Contact formation mechanism between squeezed crystalline solids

IOP Conference Series: Materials Science and Engineering, ISSN: 1757-899X, Vol: 907, Issue: 1
2020
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Conference Paper Description

The mechanism was proposed and experimentally approved for the final stage of the high temperature contact formation after generation of closed pores in the contact plane. The mechanism is that the pores being healed by the dislocation-diffusion mechanism form assemblages of vacancy type prismatic dislocation loops which alternate with clusters of previously formed interstitial prismatic loops. Between the vacancy-type loops and interstitial ones the diffusion interaction is established resulting in recombination of defects with different signs, the contact formation, pore healing, and decreasing stress and dislocation density in the contact area.

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