Shielding gas influences on laser weldability of tailored blanks of advanced automotive steels
Source abstract
Abstract
Abstract The effects of shielding gas types and flow rates on CO2 laser weldability of DP600/TRIP700 steel sheets were studied in this work. The evaluated shielding gases were helium (He), argon (Ar) and different mixtures of He and Ar. Weld penetration, tensile strength and formability (Erichsen test) of laser welds were found to be strongly dependent upon the shielding gas types. The ability of shielding gas in removing plasma plume and thus increasing weld penetration is believed to be closely related to ionization potential and atomic weight which determine the period of plasma formation and disappearance. It was found that the higher helium shielding gas flow rate, the deeper weld penetration and the lower weld width.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Welding Techniques and Residual Stresses · Additive Manufacturing Materials and Processes · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (13)
Show source-provided references
1. Laser weldability of high-strength steel sheets in fabrication of tailor welded blanks10.1533/wint.2004.3321 ↗
2. Mechanics of tailor welded blanks: an overview10.4028/www.scientific.net/KEM.344.373 ↗
3. Tailor-welded blanks of different thickness ratios effects on forming limit diagrams10.1016/S0924-0136(02)00407-7 ↗
4. Characterization of tensile properties of tailor welded IF steel sheets and their formability in stretch forming10.1016/j.jmatprotec.2006.10.035 ↗
5. Modelling of plasma plume induced during laser welding10.1088/0022-3727/39/4/014 ↗
6. A study on shielding gas contamination in laser welding of non-ferrous alloys10.1016/j.apsusc.2007.08.067 ↗
7. Absorption of the laser beam by the plasma in deep laser beam welding of metals10.1063/1.360528 ↗
8. The influence of shielding gas in hybrid laser–MIG welding10.1016/j.apsusc.2007.02.144 ↗
9. The effect of plasma formation on beam focusing in deep penetration welding with CO2 lasers10.1088/0022-3727/28/12/007 ↗
10. Effects of gas shielding parameters on weld penetration of CO2 laser–TIG hybrid welding10.1016/j.jmatprotec.2006.11.019 ↗
11. The effect of shielding gas types on CO2 laser tailored blank weldability of low carbon automotive galvanized steel10.1016/S0921-5093(99)00499-2 ↗
12. Effect of assist gas flow on the gas shielding during laser deep penetration welding10.1016/j.jmatprotec.2006.12.014 ↗
13. CO2 shielding gas effects in laser welding mild steel10.2351/1.4745339 ↗