Influence of high-energy ball milling on the solid-phase sintering kinetics of ultrafine-grained heavy tungsten alloy |
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| Authors: | V. N. Chuvil’deev A. V. Nokhrin M. S. Boldin N. V. Sakharov G. V. Baranov V. Yu. Belov A. A. Popov E. A. Lantsev E. S. Smirnova |
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| Affiliation: | 1.Lobachevsky Nizhny Novgorod State University,Nizhny Novgorod,Russia;2.Russian Federal Nuclear Center,All-Russia Research Institute of Experimental Physics,Sarov, Nizhny Novgorod obl.,Russia |
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| Abstract: | The mechanisms for the sintering of ultrafine-grained 95%W–3.5%Ni–1.5%Fe heavy tungsten alloy powders have been investigated. It has been established that a decrease in the activation energy of grain boundary diffusion and the formation of a nonequilibrium solid solution of nickel and iron in the surface layer of tungsten particles upon high-energy ball milling are responsible for the decrease in optimal sintering temperature. |
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