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Effect of weld schedule on the residual stress distribution of boron steel spot welds
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Raath, Neill D., Norman, D., McGregor, I., Dashwood, R. and Hughes, Darren J. (2017) Effect of weld schedule on the residual stress distribution of boron steel spot welds. Metallurgical and Materials Transactions A, 48 (6). pp. 2900-2914. doi:10.1007/s11661-017-4079-9 ISSN 1543-1940.
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Official URL: https://doi.org/10.1007/s11661-017-4079-9
Abstract
Press-hardened boron steel has been utilized in anti-intrusion systems in automobiles, providing high strength and weight-saving potential through gage reduction. Boron steel spot welds exhibit a soft heat-affected zone which is surrounded by a hard nugget and outlying base material. This soft zone reduces the strength of the weld and makes it susceptible to failure. Additionally, different welding regimes lead to significantly different hardness distributions, making failure prediction difficult. Boron steel sheets, welded with fixed and adaptive schedules, were characterized. These are the first experimentally determined residual stress distributions for boron steel resistance spot welds which have been reported. Residual strains were measured using neutron diffraction, and the hardness distributions were measured on the same welds. Additionally, similar measurements were performed on spot welded DP600 steel as a reference material. A correspondence between residual stress and hardness profiles was observed for all welds. A significant difference in material properties was observed between the fixed schedule and adaptively welded boron steel samples, which could potentially lead to a difference in failure loads between the two boron steel welds.
Item Type: | Journal Article | ||||||||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||||
SWORD Depositor: | Library Publications Router | ||||||||||||
Library of Congress Subject Headings (LCSH): | Boron steel -- Industrial applications, Boron steel -- Welding, Electric welding, Residual stresses | ||||||||||||
Journal or Publication Title: | Metallurgical and Materials Transactions A | ||||||||||||
Publisher: | Springer US | ||||||||||||
ISSN: | 1543-1940 | ||||||||||||
Official Date: | June 2017 | ||||||||||||
Dates: |
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Volume: | 48 | ||||||||||||
Number: | 6 | ||||||||||||
Page Range: | pp. 2900-2914 | ||||||||||||
DOI: | 10.1007/s11661-017-4079-9 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Reuse Statement (publisher, data, author rights): | ** From Springer Nature via Jisc Publications Router. ** History: ** received: 14-10-2016 ** epub: 27-03-2017 ** ppub: 01-06-2017 ** Licence for this article: http://creativecommons.org/licenses/by/4.0/ | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Date of first compliant deposit: | 7 February 2018 | ||||||||||||
Date of first compliant Open Access: | 7 February 2018 | ||||||||||||
RIOXX Funder/Project Grant: |
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