Wu Z, Zhang Y, Jiang H, Zhao S, Wang Q. Microstructure Evolution Mechanism of W
f/Cu
82Al
10Fe
4Ni
4 Composites under Dynamic Compression at Different Temperatures and Strain Rates.
Materials (Basel) 2021;
14:5563. [PMID:
34639960 DOI:
10.3390/ma14195563]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/18/2021] [Accepted: 09/21/2021] [Indexed: 11/16/2022]
Abstract
Wf/Cu82Al10Fe4Ni4 composites were fabricated by the pressure infiltration method. The composites were compressed by means of a split Hopkinson pressure bar (SHPB) with strain rates of 800 and 1600 s-1 at different temperatures. The microstructure of the composites after dynamic compressing was analyzed by transmission electron microscopy (TEM). Observation revealed that there were high-density dislocations, stacking faults, twins, and recrystallization existing in the copper alloy matrix of the composites. High-density dislocations, stacking faults, and twins were generated due to the significant plastic deformation of the copper alloy matrix under dynamic load impact. We also found that the precipitated phase of the matrix played a role in the second phase strengthening; recrystallized microstructures of copper alloy were generated due to dynamic recrystallization of the copper alloy matrix under dynamic compression at high temperatures.
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