1. T. ENJO, K. IKEUCHI, Y. MURAKAMI and N. SUZUKI,Trans. JWRI 16 (1987) 285.
2. T. MOMONO, Private communication, Department of Materials Science and Engineering, Muroran Institute of Technology, Mizumoto, Japan (1993).
3. A. A. McFAYDEN, R. R. KAPOOR and T. W. EAGAR,Weld. J. 11 (1990) 399s.
4. K. SHINOZAKI, Private communication, Department of Welding and Production Engineering, Osaka University, Japan (1993).
5. D. M. STEFANESCU, B. K. DHINDAW, S. A. KACAR and A. MOITRA,Metall. Trans. 19A (1988) 2847.