Theory for reaustenitisation from ferrite/cementite mixtures in Fe-C-X steels

C. Atkinson, Taner Akbay, R. C. Reed

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

Phase transformation theory for the formation of austenite from substitutionally alloyed ferrite/cementite mixtures is discussed. The local equilibrium assumption is adopted. Diffusion of carbon in ferrite and cementite is ignored, together with the ternary diffusional interactions. The ferrite and cementite phases are assumed to be semi-infinite in extent, so that soft impingement effects are not accounted for. Subject to these assumptions, exact solutions are presented for one-dimensional (planar) growth. The solution method involves the determination of the appropriate tie-lines at the cementite/austenite and austenite/ferrite interfaces. Potential numerical difficulties which arise in determining the solution are discussed. It is found that for reasonable values of the diffusion coefficients involved, the governing equations can be simplified. The results are presented in the form of reverse time-temperature-transformation diagrams, and comparisons with recent results for reaustenitisation from binary Fe-C steels are made. The effects of silicon and manganese as ternary alloying additions are quantified.

Original languageEnglish
Pages (from-to)2013-2031
Number of pages19
JournalActa Metallurgica Et Materialia
Volume43
Issue number5
DOIs
Publication statusPublished - Jan 1 1995

Fingerprint

Steel
Ferrite
Austenite
Silicon
Manganese
Alloying
Carbon steel
Carbon
Phase transitions
Temperature

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Theory for reaustenitisation from ferrite/cementite mixtures in Fe-C-X steels. / Atkinson, C.; Akbay, Taner; Reed, R. C.

In: Acta Metallurgica Et Materialia, Vol. 43, No. 5, 01.01.1995, p. 2013-2031.

Research output: Contribution to journalArticle

Atkinson, C. ; Akbay, Taner ; Reed, R. C. / Theory for reaustenitisation from ferrite/cementite mixtures in Fe-C-X steels. In: Acta Metallurgica Et Materialia. 1995 ; Vol. 43, No. 5. pp. 2013-2031.
@article{569be4eb2b954f40a18d78a0f639943d,
title = "Theory for reaustenitisation from ferrite/cementite mixtures in Fe-C-X steels",
abstract = "Phase transformation theory for the formation of austenite from substitutionally alloyed ferrite/cementite mixtures is discussed. The local equilibrium assumption is adopted. Diffusion of carbon in ferrite and cementite is ignored, together with the ternary diffusional interactions. The ferrite and cementite phases are assumed to be semi-infinite in extent, so that soft impingement effects are not accounted for. Subject to these assumptions, exact solutions are presented for one-dimensional (planar) growth. The solution method involves the determination of the appropriate tie-lines at the cementite/austenite and austenite/ferrite interfaces. Potential numerical difficulties which arise in determining the solution are discussed. It is found that for reasonable values of the diffusion coefficients involved, the governing equations can be simplified. The results are presented in the form of reverse time-temperature-transformation diagrams, and comparisons with recent results for reaustenitisation from binary Fe-C steels are made. The effects of silicon and manganese as ternary alloying additions are quantified.",
author = "C. Atkinson and Taner Akbay and Reed, {R. C.}",
year = "1995",
month = "1",
day = "1",
doi = "10.1016/0956-7151(94)00366-P",
language = "English",
volume = "43",
pages = "2013--2031",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "Elsevier Limited",
number = "5",

}

TY - JOUR

T1 - Theory for reaustenitisation from ferrite/cementite mixtures in Fe-C-X steels

AU - Atkinson, C.

AU - Akbay, Taner

AU - Reed, R. C.

PY - 1995/1/1

Y1 - 1995/1/1

N2 - Phase transformation theory for the formation of austenite from substitutionally alloyed ferrite/cementite mixtures is discussed. The local equilibrium assumption is adopted. Diffusion of carbon in ferrite and cementite is ignored, together with the ternary diffusional interactions. The ferrite and cementite phases are assumed to be semi-infinite in extent, so that soft impingement effects are not accounted for. Subject to these assumptions, exact solutions are presented for one-dimensional (planar) growth. The solution method involves the determination of the appropriate tie-lines at the cementite/austenite and austenite/ferrite interfaces. Potential numerical difficulties which arise in determining the solution are discussed. It is found that for reasonable values of the diffusion coefficients involved, the governing equations can be simplified. The results are presented in the form of reverse time-temperature-transformation diagrams, and comparisons with recent results for reaustenitisation from binary Fe-C steels are made. The effects of silicon and manganese as ternary alloying additions are quantified.

AB - Phase transformation theory for the formation of austenite from substitutionally alloyed ferrite/cementite mixtures is discussed. The local equilibrium assumption is adopted. Diffusion of carbon in ferrite and cementite is ignored, together with the ternary diffusional interactions. The ferrite and cementite phases are assumed to be semi-infinite in extent, so that soft impingement effects are not accounted for. Subject to these assumptions, exact solutions are presented for one-dimensional (planar) growth. The solution method involves the determination of the appropriate tie-lines at the cementite/austenite and austenite/ferrite interfaces. Potential numerical difficulties which arise in determining the solution are discussed. It is found that for reasonable values of the diffusion coefficients involved, the governing equations can be simplified. The results are presented in the form of reverse time-temperature-transformation diagrams, and comparisons with recent results for reaustenitisation from binary Fe-C steels are made. The effects of silicon and manganese as ternary alloying additions are quantified.

UR - http://www.scopus.com/inward/record.url?scp=0029306248&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029306248&partnerID=8YFLogxK

U2 - 10.1016/0956-7151(94)00366-P

DO - 10.1016/0956-7151(94)00366-P

M3 - Article

AN - SCOPUS:0029306248

VL - 43

SP - 2013

EP - 2031

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

IS - 5

ER -