Nanostructural States and Properties of the Surfacing Formed on Steel by a Cored Wire

E. V. Kapralov, E. A. Budovskikh, V. E. Gromov, Yu F. Ivanov

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7 Citations (Scopus)

Abstract

Structural-phase states and mechanical properties of electric arc surfacing by an EnDOtec DO*33 cored wire on a Hardox 400 steel are investigated. Formation of the multiphase state of the surfacing represented by grains of α-iron and inclusions of carbide phases based on iron, chromium, and niobium is revealed by the methods of electron diffraction microscopy and x-ray phase analysis. The additional treatment of the surfacing by a high-intensity electron beam is performed. Mutual arrangement of the grains of α-iron and particles of carbide phases is investigated. It is found that the surfacing layer is in the elastic-stressed state formed as a result of super-high heating and cooling rates initiated by the pulsed electron beam treatment. It is shown that the microhardness of the surfaced layer remains constant with the depth down to 4 mm and exceeds by a factor of 2.4 the microhardness of the substrate; the wear resistance of the surfacing is 3 times higher than that of the steel, and the friction coefficient of the surfacing is half that of the steel.

Original languageEnglish
Pages (from-to)471-477
Number of pages7
JournalRussian Physics Journal
Volume58
Issue number4
DOIs
Publication statusPublished - 1 Aug 2015

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Keywords

  • cored wire
  • electric arc surfacing
  • friction coefficient
  • microhardness
  • structural-phase states
  • wear resistance

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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