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Application of Quenching and PartitioningProcesses to Welding and Press Hardening
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science. Mrs. (Engineering Material)
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science. (Engineering Material)
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
2019 (English)In: Hot sheet metal forming of High-performance steel, USA, 2019, p. 727-736Conference paper, Published paper (Refereed)
Abstract [en]

One of the most critical characteristics of welding and press hardening of advanced high strengthsteels is a low ductility related to a martensitic transformation due to high cooling rate and/or plasticdeformation. The present work proposes the application of quenching and partitioning (Q&P) processingto welding and press hardening in a single production step. Using this methodology will notonly improve the ductility without losing the ultra-high strength but also accelerate the whole processrate significantly in comparison with austempering treatment in connection to hot pressing anddecrease the cost. In this regard, Gleeble simulation of different Q&P cycles beside simulation ofdeformation at different rates at different temperatures were applied to a medium carbon, Si- alloyedQ&P steel. Samples were characterized using OM, SEM, XRD, hardness, compression and tensiletests. The aim of the project is to establish manufacturing strategies for obtaining components withextreme properties.

Place, publisher, year, edition, pages
USA, 2019. p. 727-736
Series
CHS2-series, ISSN 978-3-95735-104-3 ; 7
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:ltu:diva-75411OAI: oai:DiVA.org:ltu-75411DiVA, id: diva2:1340761
Conference
CHS² 2019 - 7th International Conference on Hot Sheet Metal Forming of High Performance Steel
Available from: 2019-08-06 Created: 2019-08-06 Last updated: 2019-08-06

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