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Thermomechanical processing of (TiB + TiC)/Ti matrix composites and effects on microstructure and tensile properties

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Abstract

In the paper, 2.5 vol% (TiB + TiC)/Ti composite has been fabricated by in situ casting route. 1-D forging and subsequent multistep rolling in (α + β) phase field are conducted on the as-cast composite and, accordingly, the matrix microstructure is significantly refined, and the distribution uniformity of reinforcements is greatly improved. The tensile properties of the composites with different processing states are tested at room temperature (RT), 600 and 700 °C. The results indicate that thermomechanical processing (TMP) can drastically improve strength and elongation of the as-cast composite both at RT and 600 °C. As tensile temperature increases to 700 °C, the UTSs of the composites gradually reduce while the elongations of the composites are enhanced remarkably after TMP. The degradation in UTS can be related to the matrix softening and interfacial debonding at 700 °C.

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ACKNOWLEDGMENTS

The authors gratefully thank the financial support from the National Natural Science Foundation of China (Nos. 51504163 and 51505323), The State Key Laboratory for Advanced Metal and Materials foundation (No. 2014-ZD06), the talent funded projects of Taiyuan University of technology (Nos. tyut-rc201342a and tyut-rc201343a) and the Special/Youth Foundation of Taiyuan University of Technology (No. 2013T001-T004).

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Authors and Affiliations

  1. Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, People’s Republic of China

    Changjiang Zhang, Shuzhi Zhang & Peng Lin

  2. Department of Materials Processing Engineering, School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, People’s Republic of China

    Changjiang Zhang, Shuzhi Zhang & Peng Lin

  3. Department of Materials Science, School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, People’s Republic of China

    Zhaoping Hou

  4. National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, People’s Republic of China

    Fantao Kong & Yuyong Chen

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  1. Changjiang Zhang
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  2. Shuzhi Zhang
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  3. Peng Lin
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Correspondence to Changjiang Zhang or Shuzhi Zhang.

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Zhang, C., Zhang, S., Lin, P. et al. Thermomechanical processing of (TiB + TiC)/Ti matrix composites and effects on microstructure and tensile properties. Journal of Materials Research 31, 1244–1253 (2016). https://doi.org/10.1557/jmr.2016.143

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  • DOI: https://doi.org/10.1557/jmr.2016.143

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