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论文类型： 期刊论文

发表时间： 2010-08-20

发表刊物： MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

收录刊物： SCIE、EI、Scopus

卷号： 527

期号： 21-22

页面范围： 6098-6101

ISSN号： 0921-5093

关键字： W-Cu; Nanocomposites; Dynamic consolidation; Ball-milling; Density

摘要： It would be possible to produce nanostructured systems via dynamic consolidation due to the short duration. In the study, the bulk W-25%Cu nanocomposites were fabricated by the technique of dynamic consolidation. The nanostructured W-Cu powder was prepared by hydrogen-reduction of ball-milled W and CuO. The results indicated that the consolidated composites had a final density of 97.6% T.D. and the W crystalline sizes were measured as 27 nm. The W-Cu composites showed the homogeneous microstructure and were composed entirely of W and Cu. The fracture surface was analyzed by SEM and showed intergranular fracture. The hardness was measured. It is proved that it is feasible to fabricate nanostructured W-Cu composites by dynamic consolidation. (C) 2010 Elsevier B.V. All rights reserved.