Abstracts Book - IMRC 2018

• SE5-O020
MICROSTRUCTURE AND MECHANICAL PROPERTIES OF LASER
WELDED HSLA STEEL FOR WIND ENERGY APPLICATIONS
Osvaldo Tijerina García 1 , Martha Patricia Guerrero Mata 1 , José Luis Cavazos García 1 , Maria de
Jesus Nañez 1
1 Universidad Autónoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica, Mexico.
In the wind power generation industries, the wind turbine tower has an
improvement potential, to reduce the thickness of the plate with upgrading the
strength of the steel and therefore reduce the welding effort. In this study, 12.5
mm thick grade 70 (with a minimum yield strength of 485 MPa) high strength
low alloy (HSLA) steel plates were joined using laser welding. The microstructure,
microhardness, and tensile properties were characterised, impact testing and
the determination of residual weld stresses by hole-drilling were carried out in
order to determine a basic criteria to achieve the required mechanical
properties for the wind energy applications after the properly chosen
parameters of laser welding.
Acknowledgment:
The authors wish to acknowledge to Universidad Autónoma de Nuevo León,
Facultad de Ingeniería Mecánica y Eléctrica
Keywords: Laser beam, Welding, HSLA Steels
Presenting authors email: osvaldo.tijerinagrc@uanl.edu.mx