1. (2) Katayama, S., Mizutani, M. and Matsunawa, A., Liquid Flow Inside Molten Pool during TIG Welding and Formation Mechanism of Bubble and Porosity, Proc. 7th Int. Welding Symp., Kobe, Japan Welding Soc., (2001), pp.125-130.
2. Minor element effect on weld penetration.