Microstructural, chemical, and crystallographic investigations of dynamic strain‐induced ferrite in a microalloyed QT steel

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Standard

Microstructural, chemical, and crystallographic investigations of dynamic strain‐induced ferrite in a microalloyed QT steel. / Monschein, Stefan; Ragger, Katharina; Fasching, Josef et al.
in: Materials, Jahrgang 12.2022, Nr. 2, 313, 10.02.2022.

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Bibtex - Download

@article{860bdbeaf8964bcfad87eb6ccaff2f2a,
title = "Microstructural, chemical, and crystallographic investigations of dynamic strain‐induced ferrite in a microalloyed QT steel",
abstract = "Dynamic strain-induced transformation (DSIT) enables the formation of fine-grained ferritic microstructures, which are well suited for cold forming processes in the as-rolled condition. In this work, the formation mechanism, chemical composition, and crystallographic orientation of DSIT ferrite were investigated in a micro-alloyed steel and compared to pre-eutectoid ferrite. High-resolution techniques, such as scanning transmission electron microscopy and atom probe tomography (APT), were used for the investigations. To generate DSIT ferrite and pre-eutectoid ferrite, different experimental routes were applied using a compression deformation dilatometer. The results show a large number of NbC precipitates within DSIT ferrite, and show that the formation of DSIT ferrite is accompanied with C diffusion and the formation of retained austenite. APT measurements revealed that the C- and Mn concentration in DSIT ferrite is higher compared to pre-eutectoid ferrite. The crystallographic orientation of DSIT ferrite was examined using electron backscatter diffraction. The crystallographic orientation of DSIT ferrite after the deformation route revealed that the <111> plane normals are parallel to the compression direction with the <110> directions pointing towards the radial direction of the compressed sample. The results suggest that the formation of DSIT ferrite is a displacive mechanism, accompanied by C diffusion. ",
author = "Stefan Monschein and Katharina Ragger and Josef Fasching and Dominik Z{\"u}gner and Ronald Schnitzer",
year = "2022",
month = feb,
day = "10",
doi = "10.3390/met12020313",
language = "English",
volume = "12.2022",
journal = "Materials",
issn = "1996-1944",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "2",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Microstructural, chemical, and crystallographic investigations of dynamic strain‐induced ferrite in a microalloyed QT steel

AU - Monschein, Stefan

AU - Ragger, Katharina

AU - Fasching, Josef

AU - Zügner, Dominik

AU - Schnitzer, Ronald

PY - 2022/2/10

Y1 - 2022/2/10

N2 - Dynamic strain-induced transformation (DSIT) enables the formation of fine-grained ferritic microstructures, which are well suited for cold forming processes in the as-rolled condition. In this work, the formation mechanism, chemical composition, and crystallographic orientation of DSIT ferrite were investigated in a micro-alloyed steel and compared to pre-eutectoid ferrite. High-resolution techniques, such as scanning transmission electron microscopy and atom probe tomography (APT), were used for the investigations. To generate DSIT ferrite and pre-eutectoid ferrite, different experimental routes were applied using a compression deformation dilatometer. The results show a large number of NbC precipitates within DSIT ferrite, and show that the formation of DSIT ferrite is accompanied with C diffusion and the formation of retained austenite. APT measurements revealed that the C- and Mn concentration in DSIT ferrite is higher compared to pre-eutectoid ferrite. The crystallographic orientation of DSIT ferrite was examined using electron backscatter diffraction. The crystallographic orientation of DSIT ferrite after the deformation route revealed that the <111> plane normals are parallel to the compression direction with the <110> directions pointing towards the radial direction of the compressed sample. The results suggest that the formation of DSIT ferrite is a displacive mechanism, accompanied by C diffusion.

AB - Dynamic strain-induced transformation (DSIT) enables the formation of fine-grained ferritic microstructures, which are well suited for cold forming processes in the as-rolled condition. In this work, the formation mechanism, chemical composition, and crystallographic orientation of DSIT ferrite were investigated in a micro-alloyed steel and compared to pre-eutectoid ferrite. High-resolution techniques, such as scanning transmission electron microscopy and atom probe tomography (APT), were used for the investigations. To generate DSIT ferrite and pre-eutectoid ferrite, different experimental routes were applied using a compression deformation dilatometer. The results show a large number of NbC precipitates within DSIT ferrite, and show that the formation of DSIT ferrite is accompanied with C diffusion and the formation of retained austenite. APT measurements revealed that the C- and Mn concentration in DSIT ferrite is higher compared to pre-eutectoid ferrite. The crystallographic orientation of DSIT ferrite was examined using electron backscatter diffraction. The crystallographic orientation of DSIT ferrite after the deformation route revealed that the <111> plane normals are parallel to the compression direction with the <110> directions pointing towards the radial direction of the compressed sample. The results suggest that the formation of DSIT ferrite is a displacive mechanism, accompanied by C diffusion.

U2 - 10.3390/met12020313

DO - 10.3390/met12020313

M3 - Article

VL - 12.2022

JO - Materials

JF - Materials

SN - 1996-1944

IS - 2

M1 - 313

ER -