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Effect of Heat Treatment on Two-Phase Ti – 22Al – 25Nb Alloy Phase Composition and Microhardness

  • TITANIUM AND ITS ALLOYS
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Metal Science and Heat Treatment Aims and scope

The effect of heat treatment on evolution of the phase composition and microhardness of orthorhombic alloy Ti – 22Al – 25Nb based upon a Ti2AlNb phase (O-phase) is studied. X-ray diffraction, scanning electron microscopy, and electron back-scatter diffraction are used to study alloy phase composition after different treatments. It is shown that the alloy structure contains β/B2- and O-phases, the proportion of which changes on heat treatment. Microstructure and Vickers microhardness of alloy Ti – 22Al – 25Nb are shown to be interrelated in different states.

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Notes

  1. Alloy element content provided in atomic fractions expressed as a percentage.

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This work was supported by the Institute of Technology of Aircraft Engine, Beijing Research Institute of Aviation Engineering. This work was financially supported by the Science and Technology Plan Project of Taizhou (No. 21gya23 and No. 2002gy06). The financial support was also from Zhejiang Public Welfare Technology Application Research Project (No. LGC20E010003).

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Authors and Affiliations

  1. Zhejiang Provincial Key Laboratory for Cutting Tools, Taizhou University, Taizhou, China

    Ling Shao, Tianle Wang, Zhibiao Tu, Jitang Zhang, Jinfang Wang, Na Xue, Weiwei Li, Cheng Dai & Liu Zu

  2. Research Institute of Zhejiang University-Taizhou, Zhejiang University, Taizhou, China

    Ling Shao & Yingwei Chen

  3. Taizhou Clean Carbon Technology Company Limited, Taizhou, China

    Ling Shao, Yingwei Chen, Zhibiao Tu, Jitang Zhang, Jinfang Wang, Na Xue, Weiwei Li, Cheng Dai & Liu Zu

  4. Department of Mechanical Engineering and Materials Science, Yale University, New Haven, CT, USA

    Amit Datye

  5. School of Materials Science and Engineering, Beihang University, Beijing, China

    Sujun Wu

Authors
  1. Ling Shao
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  2. Yingwei Chen
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  3. Amit Datye
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  4. Sujun Wu
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  5. Tianle Wang
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  6. Zhibiao Tu
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  7. Jitang Zhang
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  8. Jinfang Wang
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  9. Na Xue
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  10. Weiwei Li
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  11. Cheng Dai
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  12. Liu Zu
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Corresponding author

Correspondence to Liu Zu.

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 42 – 46, May, 2023.

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Shao, L., Chen, Y., Datye, A. et al. Effect of Heat Treatment on Two-Phase Ti – 22Al – 25Nb Alloy Phase Composition and Microhardness. Met Sci Heat Treat 65, 304–308 (2023). https://doi.org/10.1007/s11041-023-00930-1

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  • DOI: https://doi.org/10.1007/s11041-023-00930-1

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