Mechanical and Metallurgical Effect on Tubular Shape by Laser Forming
Mahmudun Nabi Chowdhury1, Ju-Ri Kim2

1Mahmudun Nabi Chowdhury, Department of Mechanical Engineering, Advanced Engineering Materials Laboratory, University of Ulsan, Ulsan (South Korea). East Asia.
2Jur-Ri, Kim, Department of Mechanical Engineering, University of Ulsan, Ulsan (South Korea). East Asia.

Manuscript received on June 12, 2016. | Revised Manuscript received on June 22, 2016. | Manuscript published on July 05, 2016. | PP: 42-49 | Volume-6 Issue-3, July 2016. | Retrieval Number: C2876076316
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Abstract:  Mechanical properties of indirect hot stamping tubes are tailored by laser assisted partial rapid heating. A spiral heated region is generated on a rotating hot stamping steel tube by applying linearly moving laser. A microstructural analysis confirms that martensite phase transformation is occurred in the spiral heated region, thus inducing inhomogeneous microstructures along the length. Mechanical tests show that the mechanical performance of the indirect hot stamping tube can be tailored by properly selecting process parameters of the laser assisted heating. A microstructural analysis confirms that the laser locally induces a martensitic phase transformation in the heated region and results in inhomogeneous microstructures along the length of the tube.
Keywords: Indirect hot stamping, laser assisted heating, mechanical property.