1. Binary Alloy Phase Diagrams, ed. T. Massalski (Materials Park, OH: ASM Intl., 1986), p. 965.
2. K. Tu and R. Thompson,Acta Metall. 30, 947 (1982).
3. D. Unsworth and C. Mackay,Trans. Inst. Met. Finishing 51, 85 (1973).
4. L. Zakraysek,Welding J. 51, 536s (1972).
5. J. Stephens, Internal Memorandum, Sandia National Labo- ratories, March 2, 1989.