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Effect of heating process on fracture behaviors of Wf/Cu82Al10Fe4Ni4 composites

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Abstract

Wf/Cu82Al10Fe4Ni4(30) composites and Wf/Cu82Al10Fe4Ni4(60) composites were prepared by penetrating casting method. Three-point bending test and dynamic compression test showed that Wf/Cu82Al10Fe4Ni4(30) composites possessed higher mechanical properties than Wf/Cu82Al10Fe4Ni4(60) composites. Microstructure observation of Wf/Cu82Al10Fe4Ni4(30) composites revealed that a small amount of tungsten diffused into the Fe–Ni solid solution precipitated on the surface of tungsten fibers. The damage occurred mainly within the tungsten fibers after three-point bending test and dynamic compression test in Wf/Cu82Al10Fe4Ni4(30) composites, indicating that the composites possessed high interface strength. Dislocation density was high and stacking faults emerged in Wf/Cu82Al10Fe4Ni4(30) composites after dynamic compression. Microstructure observation of Wf/Cu82Al10Fe4Ni4(60) composites revealed that long strip of tungsten grains occurred at the edge of tungsten fibers, within which damage mainly emerged after three-point bending test, indicating that strength of the edge of tungsten fibers was low in Wf/Cu82Al10Fe4Ni4(60) composites. The fibrous structure of tungsten fiber was coarse or even disappeared in some areas, and dislocation density was low in Wf/Cu82Al10Fe4Ni4(60) composites after dynamic compression.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Harbin Institute of Technology, P. O. 3023, Science Park, No.2 Yikuang Street, Harbin, 150080, Heilongjiang, People’s Republic of China

    Z. Wu, P. C. Kang, G. H. Wu, Q. Guo & Z. Y. Xiu

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  1. Z. Wu
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  2. P. C. Kang
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  3. G. H. Wu
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  4. Q. Guo
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  5. Z. Y. Xiu
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Correspondence to Z. Wu.

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Wu, Z., Kang, P.C., Wu, G.H. et al. Effect of heating process on fracture behaviors of Wf/Cu82Al10Fe4Ni4 composites. J Mater Sci 46, 5541–5545 (2011). https://doi.org/10.1007/s10853-011-5500-1

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  • DOI: https://doi.org/10.1007/s10853-011-5500-1

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