Comparative evaluation of tungsten inert gas and laser welding of AZ31 magnesium alloy
Source abstract
Abstract
Welding of AZ31 Mg alloy was conducted using various welding techniques, namely, tungsten inert gas (TIG) welding with Ar shielding gas, TIG welding with He shielding gas, CO2 laser welding, and YAG laser welding. The results were comparatively evaluated in terms of weld bead formation and microstructural characterisation. It was found that TIG welding with both Ar and He gas shielding produced good welds without major defects. The penetration capacity can be improved using He gas shielding. Owing to their high energy density, CO2 and YAG lasers can produce weld beads having high aspect ratio. Among the four techniques used, the YAG laser produced the finest weld microstructure, whereas TIG with Ar gas shielding produced the coarsest microstructure. Shielding is a key factor controlling the O contents in the welds. The more effective the shielding provided the lower the O content in the weld. Hardness reduction in the weld metals and heat affected zones was observed for all the techniques owing to the elimination of strengthening effects by the welding operation. In summary, the present study demonstrated advantages and limitations of the various welding techniques and provided an in depth understanding of the weldability of AZ31 Mg alloy.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Welding Techniques and Residual Stresses · Titanium Alloys Microstructure and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (19)
Show source-provided references
1. ‘ASM handbook’, Vol. 6, ‘Welding, brazing and soldering’, 772–782; 1993, Materials Park, OH, ASM International.
2. ‘Welding handbook’, Vol. 3, ‘Materials and applications – part 1’, 8th edn, 121–162; 1996, Miami, FL, American Welding Society.
3. Draugelates U., Schram A., Bouaifi B., and Kettler C.: Proc. Conf. on ‘Magnesium alloys and their applications’, (ed. B. L. Mordike and K. U. Kainer), 29–35; 1998, Frankfurt, Germany, Werkstoff-Informationsgesellschaft mbH.
4. Wohlfahrt H., and Juttner S.: Proc. Conf. on ‘Magnesium alloys and their applications’, (ed. B. L. Mordike and K. U. Kainer), 589–594; 1998, Frankfurt, Germany, Werkstoff Informationsgesellschaft mbH.
5. Haferkamp H., Dilthey U., Trager G., Burmester I., and Niemeyer M.: Proc. Conf. on ‘Magnesium alloys and their applications’, (ed. B. L. Mordike and K. U. Kainer), 595–600; 1998, Frankfurt, Germany, Werkstoff-Informationsge-sellschaft mbH.
6. Draugelates U., Bouaifi B., Bartzsch J., and Ouaissa B.: Proc. Conf. on ‘Magnesium alloys and their applications’, (ed. B. L. Mordike and K. U. Kainer), 601–606; 1998, Frankfurt, Germany, Werkstoff-Informationsgesellschaft mbH.
7. Weisheit A., Galun R., and Mordike B. L.: Proc. Conf. on ‘Magnesium alloys and their applications’, (ed. B. L. Mordike and K. U. Kainer), 619–624; 1998, Frankfurt, Germany, Werkstoff-Informationsgesellschaft mbH.
8. Krohn H., and Singh S.: Proc. Conf. on ‘Magnesium alloys and their applications’, (ed. B. L. Mordike and K. U. Kainer), 625–626; 1998, Frankfurt, Germany, Werkstoff-Informationsgesellschaft mbH.
9. Draugelates U., Bouaifi B., and Steinborn S.: Proc. Conf. on ‘Magnesium alloys and their applications’, (ed. B. L. Mordike and K. U. Kainer), 627–632; 1998, Frankfurt, Germany, Werkstoff-Informationsgesellschaft mbH.
10. Juttner S. · January–February · 1998 · 11
11. Weisheit A. · Weld. J · 1998 · 77 · 149s
12. 10.2351/1.52188510.2351/1.521885 ↗
13. Marya M. · Weld. World · 2000 · 44 · 31
14. Munitz A. · Weld. J · 2000 · 79 · 202s
15. Marya M., Paray S., Marya S. K., and Edwards G. R.: Proc. Int. Conf. on ‘Advances in welding and cutting technology’, New Delhi, India, February 2001, Indian Institute of Welding, 992–1008.
16. Sun Z., Pan D., Zhang W., Wei J., and Tan Y. K. ‘Welding of non-ferrous alloys’, Project Report C99–P–145AR, Gintic Institute of Manufacturing Technology, Singapore, 2000.
17. Steen W. M. ‘Laser material processing’; 1994, London, Springer-Verlag.
18. Dawes C. ‘Laser welding’; 1992, New York, McGraw-Hill.10.1533/9781845698843 ↗
19. Sun Z., Salminen A. S., and Moisio T. J. I.: Proc. 2nd Int. Conf. on ‘Power beam technology’, Stratford-upon-Avon, UK, September 1990, The Welding Institute, paper 2.