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Preparation and Dynamic Mechanical Properties at Elevated Temperatures of a Tungsten/Glass Composite

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Abstract

Experiments were conducted to prepare a borosilicate glass matrix composite containing 50 vol.% tungsten and examine its dynamic compressive behavior at elevated temperatures in the range of 450-775 °C. The results show that the homogenous microstructure of the tungsten/glass composite with relative density of ~ 97% can be obtained by hot-pressing sintering at 800 °C for 1 h under pressure of 30 MPa. Dynamic compressive testing was carried out by a separate Hopkinson pressure bar system with a synchronous device. The results show that the peak stress decreases and the composite transforms from brittle to ductile in nature with testing temperature increasing from 450 to 750 °C. The brittle–ductile transition temperature is about 500 °C. Over 775 °C, the composite loses load-bearing capacity totally because of the excessive softening of the glass phase. In addition, the deformation and failure mechanism were analyzed.

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Acknowledgments

This work was supported by the funding of National Key Laboratory of Science and Technology on Materials under Shock and Impact under Grant No. 9140C320102150C32001 and the National Natural Science Foundation of China under Grant No. 51671030.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China

    Chong Gao, Yingchun Wang, Xueya Ma, Keyi Liu, Yubing Wang, Shukui Li & Xingwang Cheng

  2. National Key Laboratory of Science and Technology on Materials Under Shock and Impact, Beijing, 100081, China

    Yingchun Wang, Shukui Li & Xingwang Cheng

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  1. Chong Gao
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  2. Yingchun Wang
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  3. Xueya Ma
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  4. Keyi Liu
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  5. Yubing Wang
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  6. Shukui Li
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  7. Xingwang Cheng
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Correspondence to Yingchun Wang.

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Gao, C., Wang, Y., Ma, X. et al. Preparation and Dynamic Mechanical Properties at Elevated Temperatures of a Tungsten/Glass Composite. J. of Materi Eng and Perform 27, 1040–1046 (2018). https://doi.org/10.1007/s11665-018-3230-0

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  • DOI: https://doi.org/10.1007/s11665-018-3230-0

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