Abstract
The mechanical alloying was carried out using pure Cu, graphite and Ti or Zr, and the powders of solution or nanometer order composite in Cu-Ti-C and Cu-Zr-C systems obtained were consolidated by hot-isostatic-pressing, hot-forging, hot-pressing and/or hot-extrusion. The strength of the specimens prepared by hot-isostatic-pressing as-mechanically alloyed powders, followed by hot-forging at 1073 K were 294-412 MPa, and their values of elongation were 2-4 %. The specimens prepared by hot-pressing at 1273 K, and the specimens prepared by hot-isostatic-pressed at 1073 K after canning the powders heat-treated at 1073K for 3.2 ks, followed by hot-forging at 1073 K were relatively high strengh of 510-560 MPa, however, their values of elongation were 3-5 %. The strength of the specimens prepared by hot-extrusion at 1073 K were 657-725 MPa, and their values of elongation were 11-12 %, they were very strong and ductile.
