Nonequilibrium thermodynamic modeling of carbon partitioning in quench and partition (Q&P) steel

Amit K. Behera; G. B. Olson

doi:10.1016/j.scriptamat.2017.12.027

Nonequilibrium thermodynamic modeling of carbon partitioning in quench and partition (Q&P) steel

Amit K. Behera^*, G. B. Olson

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

The influence of partitioning temperature on carbon partitioning during the quench and partition (Q&P) cycle and the associated non-equilibrium phase transformation thermodynamics have been investigated. Lower partitioning temperatures are reported to result in higher carbon partitioning with varying austenite phase fraction. Thermodynamic simulations considering para-equilibrium conditions with an added temperature-dependent effective stored energy contribution have been shown to reasonably predict the retained austenite carbon content. The developed models have been validated with new alloy compositions, QP cycles and data from existing literature.

Original language	English (US)
Pages (from-to)	6-10
Number of pages	5
Journal	Scripta Materialia
Volume	147
DOIs	https://doi.org/10.1016/j.scriptamat.2017.12.027
State	Published - Apr 1 2018

Keywords

3DAP
HEXRD
Para-equilibrium
Quench and partition
Thermodynamic modeling

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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AB - The influence of partitioning temperature on carbon partitioning during the quench and partition (Q&P) cycle and the associated non-equilibrium phase transformation thermodynamics have been investigated. Lower partitioning temperatures are reported to result in higher carbon partitioning with varying austenite phase fraction. Thermodynamic simulations considering para-equilibrium conditions with an added temperature-dependent effective stored energy contribution have been shown to reasonably predict the retained austenite carbon content. The developed models have been validated with new alloy compositions, QP cycles and data from existing literature.

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KW - Para-equilibrium

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KW - Thermodynamic modeling

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