期刊
MATERIALS LETTERS
卷 201, 期 -, 页码 78-81出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.04.150
关键词
Composite materials; Deposition; Metallurgy; Solidification
资金
- Science and Technology Innovation Foundations of BIT [3020012211601, 3020012211618]
In this paper, a gas-solid two-phase atomization and deposition process for high-quality particle reinforced metal matrix composites was proposed and used in the manufacture of 7055-SiCp composites specimens. The microstructure and mechanical properties of fabricated specimens were tested and then compared with conventional spray formed 7055Al alloy to evaluate the proposed technology. The average grain size of 7055-SiCp composites is about 16 mu m, which is much smaller than that of 7055Al alloy (about 24 mu m). The SiC particles uniformly distribute throughout the matrix, and no particle agglomeration can be observed. The compression peak stress of 7055-SiCp composites at room temperature is 687.5 MPa, and 4.74% larger than that of spray formed 7055Al alloy. Results indicate the gas-solid two-phase atomization and deposition process proposed in this paper to be a promising high-quality metal matrix composites preparation technology. (C) 2017 Elsevier B.V. All rights reserved.
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