Composites of B-doped ductile Ni3Al alloy matrix with no-oxide WC ceramic p
owders were produced by mechanical alloying, half-sintering and buildup wel
ding. WC powders form non-continuous hardening phases, which are distribute
d in Ni3Al matrix, wetting well with the matrix. The hardness and the struc
ture stability are retained to temperatures of at least 850 degrees C. Afte
r build-up welding, most of the NiAl phase left after sintering was changed
into other phases and some graphite was precipitated in the matrix. The sa
nd-laden water wear test showed expected results.