The present invention relates to a nanostructured metal powder and a
method of fabricating the same. A twin-wire electric arc process is
performed to melt the wire tips, and metal melt is formed.
Simultaneously, the metal melt is broken up into melt droplets by an
atomizing device. The operating temperature of the electric arc process
is controlled between melting point and boiling point of the wire, to
avoid vaporization of the melt droplets. Then, a fast cooling is
performed to quench the melt droplets. Thus, melt droplets are solidified
to .mu.m-scaled, spherical and dense powders comprising nano-grains
(d<100 nm).