Thermocyclic Strength of Gray Cast Iron SCh20 at High-Temperature Heat Shifts

The thermocyclic strength of the SCh20 gray cast iron (analog of A48-30B AISI cast iron) is studied to predict the durability of casting molds made of SCh20 under conditions of thermal fatigue upon filling with liquid metal. The samples are tested by cyclic heating in a furnace to maximum temperatur...

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Published in:Inorganic materials : applied research 2021-11, Vol.12 (6), p.1526-1533
Main Authors: Khlyamkov, N. A., Balakin, S. M., Belyaeva, L. A., Petrov, V. A.
Format: Article
Language:English
Subjects:
Casting
Chemistry
Chemistry and Materials Science
Crack propagation
Durability
Fatigue tests
Finite element method
Gray iron
High temperature
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Liquid metals
Materials Science
Metal Sciences. Metallurgy
Molds
Thermal cycling
Thermal fatigue
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Balakin, S. M.
Belyaeva, L. A.
Petrov, V. A.
description The thermocyclic strength of the SCh20 gray cast iron (analog of A48-30B AISI cast iron) is studied to predict the durability of casting molds made of SCh20 under conditions of thermal fatigue upon filling with liquid metal. The samples are tested by cyclic heating in a furnace to maximum temperatures from 700 to 1000°C with subsequent cooling in air and water. The dependences of the Coffin type and the crack growth rate in the samples are obtained on the basis of metallographic measurements of the crack depth in the samples and calculations by the finite element method of the deformation span. The results of the research allow us to predict the durability of casting molds made of SCh20 under conditions of thermal fatigue upon filling with liquid metal.
doi_str_mv 10.1134/S2075113321060058
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subjects Casting
Chemistry
Chemistry and Materials Science
Crack propagation
Durability
Fatigue tests
Finite element method
Gray iron
High temperature
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Liquid metals
Materials Science
Metal Sciences. Metallurgy
Molds
Thermal cycling
Thermal fatigue
title Thermocyclic Strength of Gray Cast Iron SCh20 at High-Temperature Heat Shifts
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