An Investigation on Laser Welding Parameters on the Strength of TRIP Steel

Abstract

The energy required for joining steel segments by using laser welding is relatively very low compared with arc welding, gas welding, or any other conventional welding techniques. Moreover, the rapid cooling may create a significant effect on different regions, such as the fusion zone (FZ), heat affected zone (HAZ), and base metal (BM), and in turn affect different parameters. In this study, the characteristics of the laser-welded joint were investigated by varying laser power, welding velocity and incident angle, and tensile strength. In our, experiments. the microhardness was increased by varying the power of laser welding. The strength of the joint was increased to 549 MPa with 2200 W high power, 30 mm/s velocity, and 80º laser incident angle. By increasing the power and velocity of the laser, the welding gun strength was improved; conversely, the angle of laser incident on the welding location decreased while its strength was increased.

Formation and Characterization of MgSe Alloys by Pulsed Laser Welding Technique

“…[ 7 ] Under conditions where the maximum surface temperature is less than the material's melting point, the smaller the spot diameter, the deeper the hardened layer. [ 8 ] In addition, large arc voltage values result in shorter arc lengths. Shorter arc lengths produce narrower melt width at the top surface of the weld.…”

“…Furthermore, materials produced by the laser welding technique are known for their excellent mechanical and electronic properties. [ 7–9 ] These features make materials produced by this method widely used in automotive, energy, electronics, aerospace, and medical applications. [ 8 ] The present study will explore the effects of laser arc voltage, beam diameter, pulse durations (repetitions), and pulse width on the structural, compositional, morphological, and electrical properties of MgSe alloys.…”

“…[ 7–9 ] These features make materials produced by this method widely used in automotive, energy, electronics, aerospace, and medical applications. [ 8 ] The present study will explore the effects of laser arc voltage, beam diameter, pulse durations (repetitions), and pulse width on the structural, compositional, morphological, and electrical properties of MgSe alloys. The optimal laser parameters for producing the MgSe alloys will also be determined.…”

Investigation of Laser Ablative Micromachining of Al/TiB2 Nanocomposite

“…The laser can be utilized to cut such high-strength alloys to obtain the required shape and dimension. The concentrated energy of the laser beam is highly intended to melt high-strength materials due to its high-power density [2]. Laser beam machining (LBM) process is preferred over the other unconventional machining processes owing to its high ablation rate and the ability to yield a good surface finish.…”