Laser Beam Forming (LBF) being a novel technique and non-contact manufacturing process, employs laser beam as the tool of shaping and bending metal sheets into different shapes and curvatures for various applications. LBF is a high-temperature process, where rapid heating and cooling occurs causing microstructural changes like dynamic recrystallization and phase changes. The study becomes necessary to ensure that the structural integrity of the processed material is not compromised. Hence, the investigation focuses on the effect of temperature on the developed microstructure during the LBF process. The design of experiment was considered, using three levels and five factors. The experimentally measured curvatures were validated with the predicted measured curvatures, which were found to be in agreement. The result shows that the developed ferrite and pearlite grains were due to the heating and cooling. Furthermore, the average grain sizes at a low energy density of about 355°C and high energy density of about 747°C were found to be about 10 μm and 6 μm respectively. It is implied that the high temperature from the high laser energy aided the deformation of the grains significantly. However, such high temperature must be closely monitored so to avoid metallurgical notches in the processed component.
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ASME 2017 International Mechanical Engineering Congress and Exposition
November 3–9, 2017
Tampa, Florida, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5835-6
PROCEEDINGS PAPER
Effect of Temperature on the Evolved Microstructure During Laser Beam Forming of Sheet Steels
Stephen Akinlabi,
Stephen Akinlabi
University of Johannesburg, Johannesburg, South Africa
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Madindwa Mashinini,
Madindwa Mashinini
University of Johannesburg, Johannesburg, South Africa
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Esther Akinlabi
Esther Akinlabi
University of Johannesburg, Johannesburg, South Africa
Search for other works by this author on:
Stephen Akinlabi
University of Johannesburg, Johannesburg, South Africa
Madindwa Mashinini
University of Johannesburg, Johannesburg, South Africa
Esther Akinlabi
University of Johannesburg, Johannesburg, South Africa
Paper No:
IMECE2017-72044, V002T02A069; 8 pages
Published Online:
January 10, 2018
Citation
Akinlabi, S, Mashinini, M, & Akinlabi, E. "Effect of Temperature on the Evolved Microstructure During Laser Beam Forming of Sheet Steels." Proceedings of the ASME 2017 International Mechanical Engineering Congress and Exposition. Volume 2: Advanced Manufacturing. Tampa, Florida, USA. November 3–9, 2017. V002T02A069. ASME. https://doi.org/10.1115/IMECE2017-72044
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