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  4. № 10 2017
  5. P. 103

ТРАНСФОРМАЦІЯ СТРУКТУРИ ВИСОКОВУГЛЕЦЕВОГО СПЛАВУ Fe-V-C ПРИ ЗНЕВУГЛЕЦЮВАННІ

O.V.MOVCHAN,
 
S.I.Gubenko,
 
K.O.CHERNOIVANENKO
 

Bulletin of the Ukrainian Material Science Society of I.M. Frantsevich - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2017, #10
http://www.materials.kiev.ua/article/2968

Abstract

The regularities of phase and structural transformations during decarburization of a high- carbon Fe-V-C alloy were investigated. The eutectic transformation

L→ γ + VC is established by the method of geometric thermodynamics and metallographic analysis. That accompanied by a diffuse redistribution of the carbide-forming element ahead of the crystallization front. Decarburization in a liquid-solid state allows forming a favorable structure with VC fibers oriented perpendicular to the surface in the near-surface zone. It was established that the subsequent carburization of a pre-decarburized Fe-V-C alloy under special conditions makes it possible to obtain in the surface layer a natural composite with high wear resistance.


DECARBURIZATION, DIFFUSION, FE-V-C SYSTEM, FRONT OF CRYSTALLIZATION, GEOMETRIC THERMODYNAMICS, ЕВТЕКТИЧНЕ ПЕРЕТВОРЕННЯ

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