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Indexed by:Journal Papers

Date of Publication:2021-07-21

Journal:RARE METAL MATERIALS AND ENGINEERING

Volume:38

Page Number:365-369

ISSN No.:1002-185X

Key Words:explosive compaction; mechanical alloying; alumina-copper; dispersion strengthening

Abstract:A new preparation technology of high-quality and low-price nano-alumina dispersion strengthening copper was proposed. Firstly, mechanical alloying method was used to prepare alumina and copper mixed powder. Secondly, Al(2)O(3)-Cu porous body was obtained after sintering in hydrogen atmosphere. Finally, Al(2)O(3)-Cu bulk billet was obtained by explosive compaction. The detection results indicate the relative density of Al(2)O(3)-Cu bulk billet exceeds 98%, and nano-alumina particles dispersively distribute in copper matrix which greatly improves materials' hardness and strength.