KnE Materials Science
ISSN: 2519-1438
The latest conference proceedings on physical materials, energy materials, electrical materials.
Studies of the Chemical and Structural Heterogeneity of the Technological Model of the Fusion Boundary of Pearlitic Steel and the Material of the Anticorrosive Cladding of VVER
Published date: May 06 2018
Journal Title: KnE Materials Science
Issue title: 15th International School-Conference "New Materials – Materials of Innovative Energy" (MIE)
Pages: 187–198
Authors:
Abstract:
The properties of ingots of variable chemical composition are investigated. The ingots simulated the fusion boundary of heterogeneous steels of pearlitic and austenitic grade, used as structural for VVER-type reactors. The distribution of chemical elements and hardness, microstructure was studied. The phase composition of the ingots was studied using thermodynamic modeling. It was found that the distribution of alloying elements, hardness and phase composition is nonlinear. In ingots, a zone of a sudden change in hardness was detected, from 350 HB to 150 HB, ingot 1, and from 250 HB to 160 HB, ingot 2. A study of the phase composition and microstructure showed that at a ratio of the austenite phase to the ferritic (71-76)% to (29-24)%, a sharp change in hardness is observed.
Keywords: heterogeneous welded joints and cladding, fusion boundary, technological modeling, thermodynamic modeling.
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