Carbon solubility in nanostructured copper

Mechanical behavior of metallic glass reinforced nanostructured tungsten composites synthesized by spark plasma sintering

“…As the milling time increases above 360 ks the change of the lattice parameter becomes more prominent reaching 31.844 nm after 720 ks milling time. The lattice parameter increase with increasing milling time coincides with previously reported results [18].…”

Hardening in copper-based nanocomposites

“…2. The as-milled powders present a hardness value, 507 VHN, which represents a two-fold increase relative to that of nanostructured copper processed via MA, about 260 VHN [5]. Much of this increase is certainly due to the high volume fraction of carbide, about 30 vol.%.…”

Microstructural Evolution of Cu-10at%C Nanocomposite Powder During High Energy Mechanical Milling

“…The lattice parameter of Cu remains nearly unchanged before milling for 6 h, and increases sharply after milled for 6 h and then reaches its ultimate value. The increase of the lattice parameter of Cu indicates the formation of Cu(C) solid solution [11][12][13]15 . Thus, after milled for 6 h, the concentration of carbon in Cu increases with the increase of milling time, and reaches its saturation milled for 24 h.…”

“…In this study, our focus is on the microstructural evolution of Cu-10at%C nanocomposite during HEMM, where the equilibrium solid solubility of carbon in copper is virtually zero 10 . HEMM of Cu-graphite composite powders have been studied by several groups [11][12][13][14][15] . The pioneering studies of Saji et al 11 and Yamane et al 12 on mechanical milling of copper-graphite mixtures with different weight ratio of graphite indicated the solubility of carbon in copper can be as high as 28.5at%, while the study carried out by Marque et al 13 on mechanical milled Cu-10at%C composite showed that the carbon content was overestimated by the former researchers and the existence of carbon nanoparticles was shown.…”

“…HEMM of Cu-graphite composite powders have been studied by several groups [11][12][13][14][15] . The pioneering studies of Saji et al 11 and Yamane et al 12 on mechanical milling of copper-graphite mixtures with different weight ratio of graphite indicated the solubility of carbon in copper can be as high as 28.5at%, while the study carried out by Marque et al 13 on mechanical milled Cu-10at%C composite showed that the carbon content was overestimated by the former researchers and the existence of carbon nanoparticles was shown. Transmission electron microscopy examination confirmed that the microstructure of the mechanically milled Cu-10at%C nanocomposite consisted of nanostructured copper matrix dispersed with carbon nanoparticles 14 .…”