Revealing Precipitate Development During Hot Rolling and Cooling of a Ti–Nb Micro-Alloyed High Strength Low-Alloy Steel through X-Ray Scattering
(2023) In Advanced Engineering Materials 25(9).- Abstract
High-energy synchrotron X-ray small-angle scattering (SAXS) is used to study the precipitate development during hot rolling and cooling of a commercial Ti–Nb micro-alloyed, high-strength, low-alloy (HSLA) steel. To study precipitation during hot rolling conditions, Gleeble and dilatometer trials are made. Samples are then studied at room temperature using SAXS in conjunction with transmission electron microscopy (TEM). TEM is used to determine the morphology and composition of the precipitates, whilst both TEM and SAXS are used to study the particle sizes. One major advantage with high-energy SAXS is the ability to make measurements after a minimum of sample preparation and in transmission geometry, as opposed to just at prepared... (More)
High-energy synchrotron X-ray small-angle scattering (SAXS) is used to study the precipitate development during hot rolling and cooling of a commercial Ti–Nb micro-alloyed, high-strength, low-alloy (HSLA) steel. To study precipitation during hot rolling conditions, Gleeble and dilatometer trials are made. Samples are then studied at room temperature using SAXS in conjunction with transmission electron microscopy (TEM). TEM is used to determine the morphology and composition of the precipitates, whilst both TEM and SAXS are used to study the particle sizes. One major advantage with high-energy SAXS is the ability to make measurements after a minimum of sample preparation and in transmission geometry, as opposed to just at prepared surfaces, plus the possibility to determine volume fractions of the precipitates. The measurements show that after deformation at high temperature, particle coarsening occurs and the volume fraction of precipitates increases after holding for 20 s at 900 °C which confirms strain-induced precipitation at finishing rolling conditions. The measurements show that holding at 600 or 650 °C for one hour gives a larger volume fraction of nanosized particles. Coiling simulations with slow cooling from 600 to 470 °C show coarsening of particles and an increase in the volume fraction of the smaller particles compared to holding at a constant temperature.
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- author
- Blankenburg, Malte ; Bäcke, Linda ; Claesson, Erik ; Moberg, Robert ; Jaladurgam, Nitesh Raj ; Lindberg, Fredrik ; Gladh, Magnus ; Edwards, Mårten ; Lind, Martin and Hall, Stephen A. LU
- organization
- publishing date
- 2023-05
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- carbides, HSLA steel, precipitation, SAXS, TEM
- in
- Advanced Engineering Materials
- volume
- 25
- issue
- 9
- article number
- 2201356
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:85146443465
- ISSN
- 1438-1656
- DOI
- 10.1002/adem.202201356
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: Sweden's Innovation Agency, Vinnova (Grant No. 2019-05294), is greatly acknowledged for funding the project. The authors acknowledge DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the provision of experimental facilities. Parts of this research were carried out at PETRA III using P21.2. The authors thank Dr. Sylvio Haas and Dr. Ulrich Lienert for the scientific discussion. Open Access funding enabled and organized by Projekt DEAL. Publisher Copyright: © 2022 The Authors. Advanced Engineering Materials published by Wiley-VCH GmbH.
- id
- 9bf932e7-edd8-48fc-9c78-603c7ac3f9ab
- date added to LUP
- 2024-01-15 13:00:53
- date last changed
- 2024-01-15 13:01:56
@article{9bf932e7-edd8-48fc-9c78-603c7ac3f9ab,
abstract = {{<p>High-energy synchrotron X-ray small-angle scattering (SAXS) is used to study the precipitate development during hot rolling and cooling of a commercial Ti–Nb micro-alloyed, high-strength, low-alloy (HSLA) steel. To study precipitation during hot rolling conditions, Gleeble and dilatometer trials are made. Samples are then studied at room temperature using SAXS in conjunction with transmission electron microscopy (TEM). TEM is used to determine the morphology and composition of the precipitates, whilst both TEM and SAXS are used to study the particle sizes. One major advantage with high-energy SAXS is the ability to make measurements after a minimum of sample preparation and in transmission geometry, as opposed to just at prepared surfaces, plus the possibility to determine volume fractions of the precipitates. The measurements show that after deformation at high temperature, particle coarsening occurs and the volume fraction of precipitates increases after holding for 20 s at 900 °C which confirms strain-induced precipitation at finishing rolling conditions. The measurements show that holding at 600 or 650 °C for one hour gives a larger volume fraction of nanosized particles. Coiling simulations with slow cooling from 600 to 470 °C show coarsening of particles and an increase in the volume fraction of the smaller particles compared to holding at a constant temperature.</p>}},
author = {{Blankenburg, Malte and Bäcke, Linda and Claesson, Erik and Moberg, Robert and Jaladurgam, Nitesh Raj and Lindberg, Fredrik and Gladh, Magnus and Edwards, Mårten and Lind, Martin and Hall, Stephen A.}},
issn = {{1438-1656}},
keywords = {{carbides; HSLA steel; precipitation; SAXS; TEM}},
language = {{eng}},
number = {{9}},
publisher = {{Wiley-Blackwell}},
series = {{Advanced Engineering Materials}},
title = {{Revealing Precipitate Development During Hot Rolling and Cooling of a Ti–Nb Micro-Alloyed High Strength Low-Alloy Steel through X-Ray Scattering}},
url = {{http://dx.doi.org/10.1002/adem.202201356}},
doi = {{10.1002/adem.202201356}},
volume = {{25}},
year = {{2023}},
}