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- Title
Microstructure and Mechanical Properties of Continuous Tungsten Fiber-Reinforced Tungsten-Zirconium Carbide-Copper Composites by Reactive Infiltration.
- Authors
Wang, Dong; Xu, Kai; Wei, Boxin; Ding, Xiang; Ran, Songlin
- Abstract
Continuous tungsten fiber-reinforced tungsten-zirconium carbide-copper (Wf/W-ZrC-Cu) composites have been prepared by infiltrating Zr14Cu51 and 40 wt.% Zr-Cu molten alloys into porous Wf/W + WC preforms at 1200°C. The Zr-Cu infiltrants reducted most WC into W and ZrC. Residual Cu was advantageous to the extrinsic energy dissipation mechanisms of undamaged Wf by friction/interface de-bonding between Wf and W-ZrC matrix. Flexural strength and fracture toughness of the composites reached 571 MPa and 7.85 MPa m1/2, respectively. The composites with ~ 4 vol.% continuous Wf presented a pseudo-plastic-type fracture behavior and exhibited superior fracture work (~ 103 J m−2). The hybrid strengthening and toughening effects of Wf and in situ-formed submicron-sized ZrC particles have made the Wf/W-ZrC-Cu composites better combination properties than reactive melt-infiltrated W-ZrC-Cu composites.
- Subjects
TUNGSTEN alloys; TUNGSTEN; LIQUID alloys; MICROSTRUCTURE; FRACTURE strength; FLEXURAL strength
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2022, Vol 74, Issue 11, p4307
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-022-05433-7