A microstructural investigation on deformation mechanisms of Fe-18Cr-12Mn-0.05C metastable austenitic steels containing different amounts of nitrogen

A. Kermanpur; P. Behjati; J. Han; A. Najafizadeh; Y. K. Lee

doi:10.1016/j.matdes.2015.05.075

A microstructural investigation on deformation mechanisms of Fe-18Cr-12Mn-0.05C metastable austenitic steels containing different amounts of nitrogen

A. Kermanpur, P. Behjati, J. Han, A. Najafizadeh, Y. K. Lee

Department of Materials Science and Engineering

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

14 Citations (Scopus)

Abstract

Deformation mechanisms of the Ni-free Fe-18Cr-12Mn-0.05C (wt%) austenitic steels containing 0, 0.25 and 0.44. N were investigated. Effects of N addition, strain and temperature on the formation of deformation-induced ε- and α'-martensite phases were determined using transmission electron microscopy and electron back-scattered diffraction techniques. Based on the microstructural evolutions, it is proposed that deformation mechanism of these steels includes the sequence of γ. →. ε-martensite. →. α'-martensite, in which the formation and stability of the ε-martensite is significantly enhanced by the N content. Increased deformation temperature from 298 to 373. K reduces the formation of ε-martensite (more than 80%).

Original language	English
Pages (from-to)	273-280
Number of pages	8
Journal	Materials and Design
Volume	82
DOIs	https://doi.org/10.1016/j.matdes.2015.05.075
Publication status	Published - 2015 Oct 5

Bibliographical note

Funding Information:
One of the authors (AK) appreciates the financial support of Isfahan University of Technology (Iran) during his sabbatical leave for conducting this work.

Publisher Copyright:
© 2015 Elsevier Ltd.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matdes.2015.05.075

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title = "A microstructural investigation on deformation mechanisms of Fe-18Cr-12Mn-0.05C metastable austenitic steels containing different amounts of nitrogen",

abstract = "Deformation mechanisms of the Ni-free Fe-18Cr-12Mn-0.05C (wt%) austenitic steels containing 0, 0.25 and 0.44. N were investigated. Effects of N addition, strain and temperature on the formation of deformation-induced ε- and α'-martensite phases were determined using transmission electron microscopy and electron back-scattered diffraction techniques. Based on the microstructural evolutions, it is proposed that deformation mechanism of these steels includes the sequence of γ. →. ε-martensite. →. α'-martensite, in which the formation and stability of the ε-martensite is significantly enhanced by the N content. Increased deformation temperature from 298 to 373. K reduces the formation of ε-martensite (more than 80%).",

author = "A. Kermanpur and P. Behjati and J. Han and A. Najafizadeh and Lee, {Y. K.}",

note = "Funding Information: One of the authors (AK) appreciates the financial support of Isfahan University of Technology (Iran) during his sabbatical leave for conducting this work. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

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T1 - A microstructural investigation on deformation mechanisms of Fe-18Cr-12Mn-0.05C metastable austenitic steels containing different amounts of nitrogen

AU - Kermanpur, A.

AU - Behjati, P.

AU - Han, J.

AU - Najafizadeh, A.

AU - Lee, Y. K.

N1 - Funding Information: One of the authors (AK) appreciates the financial support of Isfahan University of Technology (Iran) during his sabbatical leave for conducting this work. Publisher Copyright: © 2015 Elsevier Ltd.

PY - 2015/10/5

Y1 - 2015/10/5

N2 - Deformation mechanisms of the Ni-free Fe-18Cr-12Mn-0.05C (wt%) austenitic steels containing 0, 0.25 and 0.44. N were investigated. Effects of N addition, strain and temperature on the formation of deformation-induced ε- and α'-martensite phases were determined using transmission electron microscopy and electron back-scattered diffraction techniques. Based on the microstructural evolutions, it is proposed that deformation mechanism of these steels includes the sequence of γ. →. ε-martensite. →. α'-martensite, in which the formation and stability of the ε-martensite is significantly enhanced by the N content. Increased deformation temperature from 298 to 373. K reduces the formation of ε-martensite (more than 80%).

AB - Deformation mechanisms of the Ni-free Fe-18Cr-12Mn-0.05C (wt%) austenitic steels containing 0, 0.25 and 0.44. N were investigated. Effects of N addition, strain and temperature on the formation of deformation-induced ε- and α'-martensite phases were determined using transmission electron microscopy and electron back-scattered diffraction techniques. Based on the microstructural evolutions, it is proposed that deformation mechanism of these steels includes the sequence of γ. →. ε-martensite. →. α'-martensite, in which the formation and stability of the ε-martensite is significantly enhanced by the N content. Increased deformation temperature from 298 to 373. K reduces the formation of ε-martensite (more than 80%).

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JO - Materials and Design

JF - Materials and Design

ER -

A microstructural investigation on deformation mechanisms of Fe-18Cr-12Mn-0.05C metastable austenitic steels containing different amounts of nitrogen

Abstract

Bibliographical note

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