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Microstructural Feature of Full-densified W-Cu Nanocomposites Containing Low Cu Content
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HOME > J Powder Mater > Volume 20(2); 2013 > Article
Microstructural Feature of Full-densified W-Cu Nanocomposites Containing Low Cu Content
Jai-Sung Lee, Sung-Soo Jung, Joon-Phil Choi, Geon-Yong Lee
Journal of Powder Materials 2013;20(2):138-141
DOI: https://doi.org/10.4150/KPMI.2013.20.2.138
1Department of Metallurgy and Materials Science, Hanyang University-ERICA
2Department of Metallurgy and Materials Science, Hanyang University-ERICA
3Department of Metallurgy and Materials Science, Hanyang University-ERICA
4Department of Metallurgy and Materials Science, Hanyang University-ERICA
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The microstructure evolution during sintering of the W-5 wt.%Cu nanocomposite powders was investigated for the purpose of developing a high density W-Cu alloy. The W-5 wt.%Cu nanopowder compact, fully-densified during sintering at 1623 K, revealed a homogeneous microstructure that consists of high contiguity structures of W-W grains and an interconnected Cu phase located along the edges of the W grains. The Vickers hardness of the sintered W-5 wt.%Cu specimen was 427pm22 Hv much higher than that (276pm19 Hv) of the conventional heavy alloy. This result is mostly due to the higher contiguity microstructure of the W grains compared to the conventional W heavy alloy.

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