University of Oulu

Laitila, J., Larkiola, J. & Porter, D. Effect of forced cooling after welding on CGHAZ mechanical properties of a martensitic steel. Weld World 62, 1247–1254 (2018).

Effect of forced cooling after welding on CGHAZ mechanical properties of a martensitic 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, FI-90570, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.5 MB)
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Language: English
Published: Springer Nature, 2018
Publish Date: 2021-01-28


The effects of forced cooling, meaning forced cooling rate and forced cooling finish temperature, on the tensile and impact toughness properties of simulated weld coarse-grained heat-affected zones have been studied for a commercial grade martensitic steel with a yield strength of 960 MPa. The simulations were done by using a Gleeble 3800 to give forced cooling finish temperatures of 500, 400, 300, 200, and 100 °C and forced cooling rates of 50 and 15 °C/s. For the steel studied, strength significantly increased with no significant negative effects on impact toughness when the steel was cooled rapidly to 200 or 100 °C at 15 °C/s. The results indicate that it may be possible to improve welding productivity and mechanical properties of the steel by using forced cooling down to 100 °C to reduce waiting time between weld passes.

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Series: Welding in the world
ISSN: 0043-2288
ISSN-E: 1878-6669
ISSN-L: 0043-2288
Volume: 62
Issue: 6
Pages: 1247 - 1254
DOI: 10.1007/s40194-018-0617-3
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: The study received financial support from Tekes—the Finnish Funding Agency for Innovation within the DIMECC program MANU—Future digital manufacturing technologies and systems.
Copyright information: © International Institute of Welding 2018. 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: