SAITO et al:ACCUMULATIVE ROLL-BONDING 583 Acknowledgements-We are grateful to J.Miyamoto,R.- 4.Saito,Y.,Utsunomiya,H.,Tsuji,N.and Sakai,T., G.Hong and S.Tanigawa of Osaka University for exper- imental Japanese Patent applied for. assistance.Nakayama Steel Works,Ltd are thanked for improvements in the rolling mill and 5.Nicholas.M.G.and Milner,D.R.,Br.Weld.J., Sumitomo Light Metal Industries,Ltd and NKK 1961.8.375. Corporation for material supplies.This study was finan- 6.Helmi,A.and Alexander,J.M.,J.Iron Steel Inst., cially supported by the Japan Research and Development 1968.206.1110. Center for Metals (JRCM). 7.Metals Handbook,9th edn,Vol.2.American Society for Metals,Metals Park,OH,1979,pp.65-66. REFERENCES 8.Sakai,T..Saito,Y..Hirano,K.and Kato,K..Trans. 1.Richert,J.and Richert,M.,Aluminium,1986,62,604. IS1J,1988,28.1028. 2.Valiev,R.Z.,Krasilnikov,N.A.and Tsenev,N.K., 9.Saito,Y.,Tsuji,N.,Utsunomiya,H.,Sakai,T.and Mater.Sci.Engng.1991.A137.35. 3.Horita,Z..Smith,D.J..Furukawa,M..Nemoto,M., Hong.R.G.,Scripta mater..1998,39,1221. Valiev,R.Z.and Langdon,T.G..J.Mater.Res., 10.Tylecote,R.F.,The Solid Phase Welding of Metals. 1996.11.1880. Edward Arnold,London,1968.AcknowledgementsÐWe are grateful to J. Miyamoto, R.- G. Hong and S. Tanigawa of Osaka University for exper￾imental assistance. Nakayama Steel Works, Ltd are thanked for improvements in the rolling mill and Sumitomo Light Metal Industries, Ltd and NKK Corporation for material supplies. This study was ®nan￾cially supported by the Japan Research and Development Center for Metals (JRCM). REFERENCES 1. Richert, J. and Richert, M., Aluminium, 1986, 62, 604. 2. Valiev, R. Z., Krasilnikov, N. A. and Tsenev, N. K., Mater. Sci. Engng, 1991, A137, 35. 3. Horita, Z., Smith, D. J., Furukawa, M., Nemoto, M., Valiev, R. Z. and Langdon, T. G., J. Mater. Res., 1996, 11, 1880. 4. Saito, Y., Utsunomiya, H., Tsuji, N. and Sakai, T., Japanese Patent applied for. 5. Nicholas, M. G. and Milner, D. R., Br. Weld. J., 1961, 8, 375. 6. Helmi, A. and Alexander, J. M., J. Iron Steel Inst., 1968, 206, 1110. 7. Metals Handbook, 9th edn, Vol. 2. American Society for Metals, Metals Park, OH, 1979, pp. 65±66. 8. Sakai, T., Saito, Y., Hirano, K. and Kato, K., Trans. ISIJ, 1988, 28, 1028. 9. Saito, Y., Tsuji, N., Utsunomiya, H., Sakai, T. and Hong, R. G., Scripta mater., 1998, 39, 1221. 10. Tylecote, R. F., The Solid Phase Welding of Metals. Edward Arnold, London, 1968. SAITO et al.: ACCUMULATIVE ROLL-BONDING 583