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Microstructure and mechanical properties of nanocrystalline WC-particle-reinforced Ti-based composites with nano/ultrafine-grained intermetallic matrix from spark plasma sintering and crystallization of amorphous phase

  • C. Yang , T. Wei , L. H. Liu , S. G. Qu , X. Q. Li and Y. Y. Li
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 103 Issue 5

Abstract

High-strength Ti66Nb13Cu8Ni6.8Al6.2 composites with intermetallic matrix reinforced by nanocrystalline WC particles were fabricated via spark plasma sintering and crystallization of amorphous phase. Microstructure analysis indicates that the bulk composites contain isolated nanocrystalline WC particles surrounded by crystallized intermetallic matrix, including ductile bcc β-Ti regions surrounded by a mixed-phase region of (Cu, Ni)-Ti2, TiC, and remaining amorphous phase. With increasing sintering temperature the crystallized intermetallic matrix transforms from nanocrystalline to an ultrafine-grained structure. The composite with ultrafine-grained intermetallic matrix reinforced by 4.5 vol.% WC exhibits high yield and fracture strengths of 2194 and 2277 MPa, respectively. The variation of fracture strength for the fabricated composites can be explained based on the volume fraction of the crystallized ductile β-Ti phase and the scale of the crystallized phase regions.

Keywords: Titanium alloys; Amorphous alloys; Composites; Spark plasma sintering
* Correspondence address Dr. Chao Yang National Engineering Research Center of Near-net-shape Forming for Metallic MaterialsSouth China University of TechnologyGuangzhou 510640, People's Republic of China Tel.: +86-20-87110099 Fax: +86-20-87112111 E-mail:

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Received: 2011-5-1
Accepted: 2011-12-22
Published Online: 2013-06-11
Published in Print: 2012-05-01

© 2012, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110734
Keywords for this article
Titanium alloys; Amorphous alloys; Composites; Spark plasma sintering

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Phase equilibria in the “SnO”–SiO2–“FeO” system in equilibrium with tin–iron alloy and the potential application for electronic scrap recycling
  5. A model to calculate the viscosity of silicate melts
  6. Surface structure of different interstitial austenitic steels after impact wear
  7. Microstructural study of boron-doped Co–Re–Cr alloys by means of transmission electron microscopy and electron energy-loss spectroscopy
  8. Orientation relationship between 14H-LPSO structured X phase and DO3-type (Mg,Zn)3RE phase in an Mg–Gd–Y–Zn–Zr alloy
  9. Microstructural, optical, and dielectric properties of nanocrystalline TiO2 films prepared via ion-assisted magnetron sputtering
  10. An investigation of the microstructure and properties of the explosively welded Gr5–SS304 clad plates for golf heads
  11. Cyclic fibre texture in hot extruded Ni50Mn29Ga21
  12. Development of high-strength pure magnesium and wrought magnesium alloys AZ31, AZ61, and AZ91 processed by hydrostatic extrusion with back pressure
  13. Effect of cerium and aluminium on the hot-deformation behaviour of magnesium
  14. Effect of alloying elements on stage-III work-hardening behaviour of Al–Zn–Mg(–Cu) alloys
  15. Effect of titanium on the as-cast microstructure and impact toughness of hypereutectic high-chromium cast iron
  16. Microstructure and mechanical properties of nanocrystalline WC-particle-reinforced Ti-based composites with nano/ultrafine-grained intermetallic matrix from spark plasma sintering and crystallization of amorphous phase
  17. Plasticity enhancement in centrally confined Zr-based bulk metallic glass
  18. In-situ observation of the fracture process in Al–Zn–Mg–Cu alloys
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  22. People
  23. Prof. Dr. rer. nat. Ludwig Schultz
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  25. DGM News
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