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). https://doi.org/10.1007/s40194-018-0617-3
Effect of forced cooling after welding on CGHAZ mechanical properties of a martensitic steel
|Author:||Laitila, Juhani1; Larkiola, Jari1; Porter, David1|
1Materials and Production Engineering, Faculty of Technology, University of Oulu, Pentti Kaiteran Katu 1, FI-90570, Oulu, Finland
|Online Access:||PDF Full Text (PDF, 0.5 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe202101283029
|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.
Welding in the world
|Pages:||1247 - 1254|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
216 Materials engineering
The study received financial support from Tekes—the Finnish Funding Agency for Innovation within the DIMECC program MANU—Future digital manufacturing technologies and systems.
© 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: https://doi.org/10.1007/s40194-018-0617-3