1. 1) D.F.Hasson and C.R.Crowe : J. Met., 34 (1982), 23.
2. 2) A.Kuroda and T.Yamakawa : Tetsu-to-Hagané, 83 (1997), 133.
3. 3) Titanium Alloy Handbook, Metals and Ceramics Information Center, Columbus, (1972).
4. 4) C.Ouchi, Y.Kohsaka, J.Matsushima, T.Tokuya and J.J.Shaw : Titan, Int. Conf. on Titanium Products and Applications, vol. 1, Titanium Development Association, Dayton, (1987), 466.
5. 5) A.Kuroda, M.Okada, M.Oshiyama, H.Tarui and H.Okamoto : Sumitomo Met., 42 (1990) Feb., 73.