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Microstructure and mechanical properties of laser surface treated 44MnSiVS6 microalloyed steel
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling.
University of Kassel, Institute of Materials Engineering – Metallic Materials.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling.ORCID-id: 0000-0003-0194-9018
University of Kassel, Institute of Materials Engineering – Metallic Materials.
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2020 (engelsk)Inngår i: Optics and Laser Technology, ISSN 0030-3992, E-ISSN 1879-2545, Vol. 127, artikkel-id 106139Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Fatigue property improvement for automotive components such as crankshafts can be achieved through material selection and tailored surface design. Microalloyed steels are of high interest for automotive applications due to their balanced properties, excellent hardenability and good machinability. Lasers facilitate efficient and precise surface processing and understanding the laser-material-property interrelationships is the key to process optimisation. This work examines microstructural development during laser surface treatment of 44MnSiVS6 microalloyed steel and the resulting mechanical properties. Laser beam shaping techniques are employed to evaluate the impact of beam shaping on the process. It revealed that ferrite structures remain in the treated area surrounded by martensite due to insufficient heating and dwell time of carbon diffusion.

sted, utgiver, år, opplag, sider
Elsevier, 2020. Vol. 127, artikkel-id 106139
Emneord [en]
Laser surface treatment, 44MnSiVS6, Laser beam shaping, Microalloyed steel, Phase transformation
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URN: urn:nbn:se:ltu:diva-77853DOI: 10.1016/j.optlastec.2020.106139ISI: 000523646800033OAI: oai:DiVA.org:ltu-77853DiVA, id: diva2:1396037
Merknad

Validerad;2020;Nivå 2;2020-04-21 (alebob)

Tilgjengelig fra: 2020-02-25 Laget: 2020-02-25 Sist oppdatert: 2020-04-21bibliografisk kontrollert

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