Sintered compacts of copper and a 50Cu–50Fe mixture have been plastically deformed to large strains (total strain ɛt=13·8) by cyclic extrusion and compression. The hardness changes after deformation indicate that no further work hardening occurs with either material when ɛt>4·6. With copper, strain accommodation at large strains would appear to occur solely by dynamic recovery and recrystallisation. With the Cu–Fe mixture, shear banding is still found at the highest strains used.
MST/1609
Get full access to this article
View all access options for this article.
References
1.
CAIRNSJ. H., CLOUGHJ., DEWEYM. A. P., and NUTTINGJ.: J. Inst. Met.,1972, 201, 569.
2.
NurrALLJ. and NUTTINGJ.: Met. Sci.,1978, 12, 430–437.
3.
RIDHAA. A. and HUTCHINSONW. B.: Acta Metall.,1982, 30, 1929.
4.
SAUNDERSI. and NUTTINGJ.: Met. Sci.,1984, 18, 571–575.
5.
KORBELA. and RICHERTM.: Acta'Metall., 1985, 33, 1971.
6.
POLLARDG. and NUTTINGJ.: Mater. Sci. Technol.,1987, 3, 462–465.
7.
ZHANGY. S. and NUTTINGJ.: Mater. Sci. Technol.,1986, 2, 254.
8.
AGHANR. L. and NUTTINGJ.: Met. Sci.,1980, 4, 223.
9.
LANGFORDG. and COHENM.: Trans. ASM, 1969, 2, 623–638.
