Stacking fault energy measurements of Fe-Mn-Al-Si austenitic twinning-induced plasticity steels

D. T. Pierce; J. Bentley; J. A. Jiménez; J. E. Wittig

doi:10.1016/j.scriptamat.2012.01.050

Stacking fault energy measurements of Fe-Mn-Al-Si austenitic twinning-induced plasticity steels

D. T. Pierce, J. Bentley, J. A. Jiménez, J. E. Wittig

Alloy Behavior & Design

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

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Abstract

Since the stacking fault energy significantly influences the deformation mechanisms of Fe-Mn-Al-Si twinning-induced plasticity steels, two methods for its experimental determination by transmission electron microscopy of dislocations, namely the size of extended nodes and the separation of Shockley partials, were evaluated for an Fe-24.7Mn-2.66Al-2.92Si (wt.%) alloy. Measurement of partial dislocation separation provided the most reliable results, yielding a stacking fault energy of ∼16 mJ m ^-2, which is comparable to recent experimental and theoretical values for similar alloys.

Original language	English
Pages (from-to)	753-756
Number of pages	4
Journal	Scripta Materialia
Volume	66
Issue number	10
DOIs	https://doi.org/10.1016/j.scriptamat.2012.01.050
State	Published - May 2012

Funding

This work is sponsored by the National Science Foundation Division of Materials Research, USA , under Grant DMR0805295 , and by the Comisión Interministerial de Ciencia y Tecnología (CICYT), Spain , under Grant MAT2009–14385 . The support of Prof. Dierk Raabe and the Max-Planck-Institut für Eisenforschung is also gratefully acknowledged.

Keywords

Dislocations
Faults
Stacking fault energy
TWIP steel
Transmission electron microscopy

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10.1016/j.scriptamat.2012.01.050

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title = "Stacking fault energy measurements of Fe-Mn-Al-Si austenitic twinning-induced plasticity steels",

abstract = "Since the stacking fault energy significantly influences the deformation mechanisms of Fe-Mn-Al-Si twinning-induced plasticity steels, two methods for its experimental determination by transmission electron microscopy of dislocations, namely the size of extended nodes and the separation of Shockley partials, were evaluated for an Fe-24.7Mn-2.66Al-2.92Si (wt.%) alloy. Measurement of partial dislocation separation provided the most reliable results, yielding a stacking fault energy of ∼16 mJ m -2, which is comparable to recent experimental and theoretical values for similar alloys.",

keywords = "Dislocations, Faults, Stacking fault energy, TWIP steel, Transmission electron microscopy",

author = "Pierce, {D. T.} and J. Bentley and Jim{\'e}nez, {J. A.} and Wittig, {J. E.}",

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T1 - Stacking fault energy measurements of Fe-Mn-Al-Si austenitic twinning-induced plasticity steels

AU - Pierce, D. T.

AU - Bentley, J.

AU - Jiménez, J. A.

AU - Wittig, J. E.

PY - 2012/5

Y1 - 2012/5

N2 - Since the stacking fault energy significantly influences the deformation mechanisms of Fe-Mn-Al-Si twinning-induced plasticity steels, two methods for its experimental determination by transmission electron microscopy of dislocations, namely the size of extended nodes and the separation of Shockley partials, were evaluated for an Fe-24.7Mn-2.66Al-2.92Si (wt.%) alloy. Measurement of partial dislocation separation provided the most reliable results, yielding a stacking fault energy of ∼16 mJ m -2, which is comparable to recent experimental and theoretical values for similar alloys.

AB - Since the stacking fault energy significantly influences the deformation mechanisms of Fe-Mn-Al-Si twinning-induced plasticity steels, two methods for its experimental determination by transmission electron microscopy of dislocations, namely the size of extended nodes and the separation of Shockley partials, were evaluated for an Fe-24.7Mn-2.66Al-2.92Si (wt.%) alloy. Measurement of partial dislocation separation provided the most reliable results, yielding a stacking fault energy of ∼16 mJ m -2, which is comparable to recent experimental and theoretical values for similar alloys.

KW - Dislocations

KW - Faults

KW - Stacking fault energy

KW - TWIP steel

KW - Transmission electron microscopy

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DO - 10.1016/j.scriptamat.2012.01.050

M3 - Article

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SN - 1359-6462

VL - 66

SP - 753

EP - 756

JO - Scripta Materialia

JF - Scripta Materialia

IS - 10

ER -

Stacking fault energy measurements of Fe-Mn-Al-Si austenitic twinning-induced plasticity steels

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