University of Oulu

Laitila, J., Larkiola, J. & Porter, D. Effect of forced cooling on the tensile properties and impact toughness of the coarse-grained heat-affected zone of a high-strength structural steel. Weld World 62, 79–85 (2018). https://doi.org/10.1007/s40194-017-0532-z

Effect of forced cooling on the tensile properties and impact toughness of the coarse-grained heat-affected zone of a high-strength structural steel

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Author: Laitila, Juhani1; Larkiola, Jari1; Porter, David1
Organizations: 1Materials and Production Engineering, Faculty of Technology, University of Oulu, Pentti Kaiteran Katu 1, 90570, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.6 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe202101283026
Language: English
Published: Springer Nature, 2018
Publish Date: 2021-01-28
Description:

Abstract

The effects of forced cooling, i.e., forced cooling rate and forced cooling finish temperature, on the tensile and impact toughness properties of simulated weld coarse-grained heat-affected zones has been explored in the case of a low-carbon thermomechanically processed steel with a yield strength of 700 MPa. The forced cooling finish temperatures that were studied were 400, 300, 200, and 100 °C and the forced cooling rates were 50 and 15 °C/s. Coarse-grained heat-affected zones were simulated using a Gleeble 3800 thermomechanical simulator. For the steel concerned, strength and impact toughness improved significantly when the steel was cooled rapidly to 200 or 100 °C. The results indicate that it may be possible to substantially improve welding productivity by using forced cooling to reduce interpass times.

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Series: Welding in the world
ISSN: 0043-2288
ISSN-E: 1878-6669
ISSN-L: 0043-2288
Volume: 62
Issue: 1
Pages: 79 - 85
DOI: 10.1007/s40194-017-0532-z
OADOI: https://oadoi.org/10.1007/s40194-017-0532-z
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
214 Mechanical engineering
Subjects:
Funding: The authors are grateful for the financial support of Tekes—the Finnish Funding Agency for Innovation within the DIMECC program MANU—Future digital manufacturing technologies and systems.
Copyright information: © International Institute of Welding 2017. This is a post-peer-review, pre-copyedit version of an article published in Welding in the World. The final authenticated version is available online at: https://doi.org/10.1007/s40194-017-0532-z