Microstructure and mechanical properties of laser surface treated 44MnSiVS6 microalloyed steel

Document identifier: oai:DiVA.org:ltu-77853
Access full text here:10.1016/j.optlastec.2020.106139
Keyword: Engineering and Technology, Materials Engineering, Manufacturing, Surface and Joining Technology, Teknik och teknologier, Materialteknik, Bearbetnings-, yt- och fogningsteknik, Laser surface treatment, 44MnSiVS6, Laser beam shaping, Microalloyed steel, Phase transformation, Produktionsutveckling, Manufacturing Systems Engineering
Publication year: 2020
Abstract:

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.

Authors

Handika Sandra Dewi

Luleå tekniska universitet; Produkt- och produktionsutveckling
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Andreas Fischer

University of Kassel, Institute of Materials Engineering – Metallic Materials
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Joerg Volpp

Luleå tekniska universitet; Produkt- och produktionsutveckling
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Thomas Niendorf

University of Kassel, Institute of Materials Engineering – Metallic Materials
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Alexander F.H. Kaplan

Luleå tekniska universitet; Produkt- och produktionsutveckling
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