Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2016)
    Thin Films Tuesday Sessions
       Session TF-TuP

Paper TF-TuP3
Effect of Laser Assisted Local Heating on Mechanical Properties during Indirect Hot Stamping of Tubes

Tuesday, December 13, 2016, 4:00 pm, Room Mauka

Session: Thin Films Poster Session
Presenter: GiDong Park, University of Ulsan, Republic of Korea
Authors: M.N. Chowdhury, University of Ulsan, Republic of Korea
T.T. Nguyen, University of Ulsan, Republic of Korea
G.D. Park, University of Ulsan, Republic of Korea
T.K.A. Dinh, University of Ulsan, Republic of Korea
S.-T. Hong, University of Ulsan, Republic of Korea
J.W. Jung, Seoul National Univeristy, Republic of Korea
H.N. Han, Seoul National Univeristy, Republic of Korea
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Mechanical behaviors of a hot stamping steel tube are experimentally investigated using laser assisted local heating. A partial surface with spiral shape along the length of tube is heated to austenitic temperature by combining the linear movement of the laser and the rotation of the tube. The result of axial crush tests suggests that the laser assisted local heating is capable to enhance mechanical strength and hardness of the tube. A microstructural analysis shows that the laser locally induces a martensitic phase transformation in the heated region along the length of the tube.