Abstract
A nanocrystalline copper-based composite reinforced with 40 vol.% silicate glass particles was successfully produced by mechanical alloying followed by hot pressing. The raw materials of crushed copper chips and soda-lime glass debris were processed in a planetary ball mill for up to 7 h. It was shown that silicate glass as alloying addition has a positive effect on the strengthening of copper and decreases its thermal expansion coefficient. During mechanical alloying, the microhardness of the composite powder particles increases to about 320 HV. The hot-pressed material demonstrates good thermal stability and increased compressive strength compared with consolidated milled copper.
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