WEAR BEHAVIOUR OF STEAM GENERATOR TUBES IN ROOM TEMPERATURE WATER

  • Lee, Young-Ho (Korea Atomic Energy Research Institute) ;
  • Kim, Hyung-Kyu (Korea Atomic Energy Research Institute) ;
  • Kim, In-Sup (Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology)
  • Published : 2002.10.21

Abstract

The wear behaviour of steam generator (SG) tubes (Inconel 600 and 690) against support materials (405 and 409 ferritic stainless steels) has been experimentally studied in room temperature water using reciprocating wear apparatus with tube-an-plate configuration. The results showed that the wear rate of Inconel 690 was lower than that of lnconel 600 with increasing normal loads and sliding amplitudes. Also, plastic deformation layers appear below the surface of both SG tubes, which have a specific thickness and are small compared with their grain size. This means that wear rate of SG tubes in water condition is closely related to the formation and fracture of plastic deformation layers.

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