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4.4 NANOCOMPOSITE STRUCTURE                                                  FUNDAMENTALS


                                         Z plane




















                        X plane              Y plane
                                                                 Figure 4.4.26
                                                                 Density change of compacts before and after side extrusion.


                                                                  Azushima et al. [12] carried out the pressing of
                                                                 pure iron powder compacts with several densities of
                                                                 5.86 (A), 6.24 (B), and 6.63 g/cm3 (C) by repetitive
                  Figure 4.4.24                                  side extrusion and they reported that the relative den-
                  Geometry change of cubic element after one pass of side  sity became the same 98% as shown in Fig. 4.4.26.
                  extrusion.
                                                                                 References
                                                                 [1] V.M. Segal: Patent of the USSR, No. 575892, (1977).
                                                                 [2] R.Z.  Valiev,  A.V. Korznikov and R.R. Mulyukov:
                                         Pass number                 Mater. Sci. Eng., A168, (1993), 141–148.
                    Route Plane
                               0  1  2 3 4  5 6       7  8       [3] K. Nakashima, Z. Horita, M. Nemoto and J.G.
                          X                                          Langdon: Acta Mater., 46, 1589–1599 (1998).
                                                                 [4] M. Furukawa, M. Iwahashi, Z. Horita, M. Nemoto,
                     A    Y
                                                                     N.K. Tsenev,  R.Z. Valiev  and T.G.  Langdon:  Acta
                          Z                                          Mater., 45, 4751–4757 (1997).
                          X                                      [5] A.  Azushima, K.  Aoki,  Y. Kataoka and  T. Inoue:
                                                                     CAMP ISIJ, 12-3, 347–350 (1999).
                          Y
                     B A
                                                                 [6] A. Azushima, K. Aoki and T. Inoue: Proceedings of
                          Z                                          the 1998 JSME Annual Meeting, Vol. 2, pp. 267–268
                                                                     (1998).
                          X
                                                                 [7] V.M. Segal: Mater. Sci. Eng., A197, 157–164 (1995).
                          Y
                     B C
                                                                 [8] H. Hidaka,  Y. Kimura and S.  Takaki: CAMP-ISIJ,
                          Z                                          12-3, 357–360 (1999).
                                                                  [9] M. Furukawa, Y. Iwahashi, Z. Horita, M. Nemoto and
                          X
                                                                     T.G. Langdon: Mater. Sci. Eng., A257 (1998), 328–332.
                     C    Y                                      [10] Y. Iwahashi, Z. Horita, M. Nemoto and T.G. Langdon:
                          Z                                          Acta Meter., 45–11, 4733–4741 (1997).
                                                                 [11] Y. Mastumoto, M. Uda and H. Kudo: Proceedings of
                  Figure 4.4.25                                      the 1988 Japan, Spring Conference  Technology
                  Geometry change of cubic elements when viewed on X, Y,  Plasticity, pp. 159–162 (1988).
                  and Z planes for processing routes A, B , B , and C after  [12] A. Azushima, K. Aoki and M. Hirama: CAMP-ISIJ,
                                                  C
                                               A
                  repetitive side extrusion.                         15(2), 379 (2002).
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