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Effect of TiC Contend on Microstructure and Mechanical Properties of High-Temperature Titanium Matrix Composites
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Shanxi Key Laboratory of Advanced Magnesium-Based Materials,Taiyuan University of Technology,Shanxi Key Laboratory of Advanced Magnesium-Based Materials,Taiyuan University of Technology,Shanxi Key Laboratory of Advanced Magnesium-Based Materials,Taiyuan University of Technology,The National Key Laboratory for Precision Hot Forming of Metals,Harbin Institute of technology,The National Key Laboratory for Precision Hot Forming of Metals,Harbin Institute of technology

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    Abstract:

    In this paper, a near-α titanium alloys reinforced with different volume fraction of TiCwere prepared by vacuum induction melting technology. The addition of TiCp was 1, 2.5, 5, 7.5, 10, 15 vol.% respectively. The effect of TiC content on microstructure and mechanical properties of near-α titanium alloys was systematically investigated by XRD, OM, SEM and Instron universal testing machine. The XRD result confirms that in-situ casting process is feasible to fabricate the composite. As TiC content increases, the morphologies of TiC are transformed from long strip-like to equiaxed shape and then to dendritic characteristic, which is closely related to the solidification paths. The addition of TiCpromotes the ultimate compression strength (UCS) and yield strength(YS) of the alloy. However, as the TiC content reaches to a certain degree, the strength decreases in different degree. The increased UCS and YS is accompanied by the rapid decreasing in fracture strain.

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[Zhang Changjiang, Lin Sibo, Zhang Shuzhi, Kong Fantao, Chen Yuyong. Effect of TiC Contend on Microstructure and Mechanical Properties of High-Temperature Titanium Matrix Composites[J]. Rare Metal Materials and Engineering,2017,46(S1):185~189.]
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History
  • Received:May 12,2016
  • Revised:May 12,2016
  • Adopted:August 08,2017
  • Online: December 13,2017
  • Published: