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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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