Welding experiments using laser-GMA hybrid welding of lap joint between 6.5 mm thick direct quenched Ramor 500 grade protection steel and 2 mm thick Optim 500 MC construction steel plates was carried out. The filler materials used were Union X96 and AISI 316LSi wire. Direct quenched Ramor 500 grade steel can be used e.g. as an armour plating applications because it possess excellent ballistic properties combined with high strength and hardness. However, joining of above material by welding can be challenging because of local softening at heat affected zone regions. The aim was to evaluate feasibility of hybrid welding process in joining point of view and to evaluate base and filler material weldability concerning e.g. hardness distribution across the weld cross-section. Also dilution assessments were made using EDS measurements in order to reveal how base and filler material is distributed across the weld cross-section.
|Title of host publication||Proceedings|
|Subtitle of host publication||31st International Congress on Applications of Lasers & Electro-optics, ICALEO 2012|
|Place of Publication||Anaheim, CA, USA|
|Publisher||Laser Institute of America|
|Publication status||Published - 2012|
|MoE publication type||A4 Article in a conference publication|
|Event||31st International Congress on Applications of Lasers & Electro-optics, ICALEO 2012 - Anaheim, CA, United States|
Duration: 23 Sep 2012 → 27 Sep 2012
|Conference||31st International Congress on Applications of Lasers & Electro-optics, ICALEO 2012|
|Abbreviated title||ICALEO 2012|
|Period||23/09/12 → 27/09/12|
- Laser GMA-hybrid welding
- direct quenched steel
- hardness profile
Karhu, M., Kujanpää, V., Leino, K., & Siltanen, J. (2012). Laser-GMA Hybrid Welding of Direct Quenched Steel in Lap Joint Configuration: A Preliminary Study. In Proceedings : 31st International Congress on Applications of Lasers & Electro-optics, ICALEO 2012 (pp. 486-493). Laser Institute of America.