Synchrotron diffraction analysis of retained austenite in welded transformation induced plasticity (TRIP) steels
(2012) In Science and Technology of Welding and Joining 17(2). p.146-154- Abstract
- A quantitative analysis of the retained austenite (RA) fractions in gas tungsten arc welded silicon and aluminium containing transformation induced plasticity steels was carried out by synchrotron X-ray diffraction measurements. The variation in RA transverse to the weld line was measured to study the effect of weld thermal cycles on the stabilisation of austenite in the heat affected zone (HAZ) and the fusion zone (FZ). The results showed that the FZ of silicon based steels contained a higher amount of RA (similar to 7%) than aluminium based steels, which contained only similar to 4%. During the solidification of the weld pool, aluminium was found to partition to solidifying delta-ferrite and to stabilise the soft delta-ferrite grains at... (More)
- A quantitative analysis of the retained austenite (RA) fractions in gas tungsten arc welded silicon and aluminium containing transformation induced plasticity steels was carried out by synchrotron X-ray diffraction measurements. The variation in RA transverse to the weld line was measured to study the effect of weld thermal cycles on the stabilisation of austenite in the heat affected zone (HAZ) and the fusion zone (FZ). The results showed that the FZ of silicon based steels contained a higher amount of RA (similar to 7%) than aluminium based steels, which contained only similar to 4%. During the solidification of the weld pool, aluminium was found to partition to solidifying delta-ferrite and to stabilise the soft delta-ferrite grains at the fusion boundaries. Owing to this partitioning, the HAZ was enriched in carbon and the RA content was found to increase with distance from the fusion boundaries. In contrast, this partitioning behaviour was not present in silicon based transformation induced plasticity steels and a lesser amount of RA was found in the coarse grained HAZ than in the FZ. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2348834
- author
- Amirthalingam, M. ; Hermans, M. J. M. ; Huizenga, R. M. ; Offerman, S. E. ; Richardson, I. M. and Gundlach, Carsten LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- TRIP steels, Retained austenite, Synchrotron diffraction, GTA welding
- in
- Science and Technology of Welding and Joining
- volume
- 17
- issue
- 2
- pages
- 146 - 154
- publisher
- Maney Publishing
- external identifiers
-
- wos:000299425300011
- scopus:84856069478
- ISSN
- 1362-1718
- DOI
- 10.1179/1362171811Y.0000000090
- language
- English
- LU publication?
- yes
- id
- 836c131e-d84e-4f20-902f-e584d40119a5 (old id 2348834)
- date added to LUP
- 2016-04-01 10:22:59
- date last changed
- 2022-01-25 22:41:13
@article{836c131e-d84e-4f20-902f-e584d40119a5,
abstract = {{A quantitative analysis of the retained austenite (RA) fractions in gas tungsten arc welded silicon and aluminium containing transformation induced plasticity steels was carried out by synchrotron X-ray diffraction measurements. The variation in RA transverse to the weld line was measured to study the effect of weld thermal cycles on the stabilisation of austenite in the heat affected zone (HAZ) and the fusion zone (FZ). The results showed that the FZ of silicon based steels contained a higher amount of RA (similar to 7%) than aluminium based steels, which contained only similar to 4%. During the solidification of the weld pool, aluminium was found to partition to solidifying delta-ferrite and to stabilise the soft delta-ferrite grains at the fusion boundaries. Owing to this partitioning, the HAZ was enriched in carbon and the RA content was found to increase with distance from the fusion boundaries. In contrast, this partitioning behaviour was not present in silicon based transformation induced plasticity steels and a lesser amount of RA was found in the coarse grained HAZ than in the FZ.}},
author = {{Amirthalingam, M. and Hermans, M. J. M. and Huizenga, R. M. and Offerman, S. E. and Richardson, I. M. and Gundlach, Carsten}},
issn = {{1362-1718}},
keywords = {{TRIP steels; Retained austenite; Synchrotron diffraction; GTA welding}},
language = {{eng}},
number = {{2}},
pages = {{146--154}},
publisher = {{Maney Publishing}},
series = {{Science and Technology of Welding and Joining}},
title = {{Synchrotron diffraction analysis of retained austenite in welded transformation induced plasticity (TRIP) steels}},
url = {{http://dx.doi.org/10.1179/1362171811Y.0000000090}},
doi = {{10.1179/1362171811Y.0000000090}},
volume = {{17}},
year = {{2012}},
}