Investigation of nanoscale twinning in an advanced high manganese twinning-induced plasticity steel

P. Kürnsteiner; C. Commenda; E. Arenholz; L. Samek; D. Stifter; H. Groiss

doi:10.1016/j.mtla.2018.04.001

Investigation of nanoscale twinning in an advanced high manganese twinning-induced plasticity steel

P. Kürnsteiner, C. Commenda, E. Arenholz, L. Samek, D. Stifter, H. Groiss

Research Center Wels

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

5 Citations (Scopus)

Abstract

A twinning induced plasticity (TWIP) steel, developed for automotive applications, was characterized down to the nanoscale to investigate the nature of the strengthening mechanisms. Both tensile-deformed and non-deformed materials were studied by light optical microscopy, X-ray diffraction, electron backscatter diffraction, and transmission electron microscopy. The investigated TWIP steel showed extensive twinning upon deformation. With high-resolution transmission electron microscopy, nano-twins as small as 3 nm in width were observed, and large-angle convergent-beam electron diffraction identified the pole mechanism as one of the twinning mechanisms in this TWIP steel. This study emphasizes that a thoughtful combination of techniques is necessary to fully capture the microstructure of this TWIP steel and explain the origin of superior mechanical properties compared to other TWIP steel grades.

Original language	English
Pages (from-to)	70-77
Number of pages	8
Journal	Materialia
Volume	1
DOIs	https://doi.org/10.1016/j.mtla.2018.04.001
Publication status	Published - Sept 2018

Keywords

Dislocations
EBSD
Microstructure
TEM
TWIP

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10.1016/j.mtla.2018.04.001

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title = "Investigation of nanoscale twinning in an advanced high manganese twinning-induced plasticity steel",

abstract = "A twinning induced plasticity (TWIP) steel, developed for automotive applications, was characterized down to the nanoscale to investigate the nature of the strengthening mechanisms. Both tensile-deformed and non-deformed materials were studied by light optical microscopy, X-ray diffraction, electron backscatter diffraction, and transmission electron microscopy. The investigated TWIP steel showed extensive twinning upon deformation. With high-resolution transmission electron microscopy, nano-twins as small as 3 nm in width were observed, and large-angle convergent-beam electron diffraction identified the pole mechanism as one of the twinning mechanisms in this TWIP steel. This study emphasizes that a thoughtful combination of techniques is necessary to fully capture the microstructure of this TWIP steel and explain the origin of superior mechanical properties compared to other TWIP steel grades.",

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author = "P. K{\"u}rnsteiner and C. Commenda and E. Arenholz and L. Samek and D. Stifter and H. Groiss",

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T1 - Investigation of nanoscale twinning in an advanced high manganese twinning-induced plasticity steel

AU - Kürnsteiner, P.

AU - Commenda, C.

AU - Arenholz, E.

AU - Samek, L.

AU - Stifter, D.

AU - Groiss, H.

PY - 2018/9

Y1 - 2018/9

N2 - A twinning induced plasticity (TWIP) steel, developed for automotive applications, was characterized down to the nanoscale to investigate the nature of the strengthening mechanisms. Both tensile-deformed and non-deformed materials were studied by light optical microscopy, X-ray diffraction, electron backscatter diffraction, and transmission electron microscopy. The investigated TWIP steel showed extensive twinning upon deformation. With high-resolution transmission electron microscopy, nano-twins as small as 3 nm in width were observed, and large-angle convergent-beam electron diffraction identified the pole mechanism as one of the twinning mechanisms in this TWIP steel. This study emphasizes that a thoughtful combination of techniques is necessary to fully capture the microstructure of this TWIP steel and explain the origin of superior mechanical properties compared to other TWIP steel grades.

AB - A twinning induced plasticity (TWIP) steel, developed for automotive applications, was characterized down to the nanoscale to investigate the nature of the strengthening mechanisms. Both tensile-deformed and non-deformed materials were studied by light optical microscopy, X-ray diffraction, electron backscatter diffraction, and transmission electron microscopy. The investigated TWIP steel showed extensive twinning upon deformation. With high-resolution transmission electron microscopy, nano-twins as small as 3 nm in width were observed, and large-angle convergent-beam electron diffraction identified the pole mechanism as one of the twinning mechanisms in this TWIP steel. This study emphasizes that a thoughtful combination of techniques is necessary to fully capture the microstructure of this TWIP steel and explain the origin of superior mechanical properties compared to other TWIP steel grades.

KW - Dislocations

KW - EBSD

KW - Microstructure

KW - TEM

KW - TWIP

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DO - 10.1016/j.mtla.2018.04.001

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SN - 2589-1529

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JO - Materialia

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Investigation of nanoscale twinning in an advanced high manganese twinning-induced plasticity steel

Abstract

Keywords

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