High-Pressure and High-Temperature Sintering of Bulk Tungsten and W-TiC Alloy with Near-Full Densification and High Hardness

CHEN Hong-Yang; PENG Fang; LIU Ping-Ping; WANG Yong-Kun; DUAN Wen-Rui; LIU Dong-Qiong; YANG Xing-Hui; LI Chun-Xia; HE Duan-Wei

doi:10.11858/gywlxb.2015.04.003

Volume 29 Issue 4

Sep 2015

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Chinese Journal of High Pressure Physics > 2015 > 29(4): 255-262.

CHEN Hong-Yang, PENG Fang, LIU Ping-Ping, WANG Yong-Kun, DUAN Wen-Rui, LIU Dong-Qiong, YANG Xing-Hui, LI Chun-Xia, HE Duan-Wei. High-Pressure and High-Temperature Sintering of Bulk Tungsten and W-TiC Alloy with Near-Full Densification and High Hardness[J]. Chinese Journal of High Pressure Physics, 2015, 29(4): 255-262. doi: 10.11858/gywlxb.2015.04.003

Citation:

CHEN Hong-Yang, PENG Fang, LIU Ping-Ping, WANG Yong-Kun, DUAN Wen-Rui, LIU Dong-Qiong, YANG Xing-Hui, LI Chun-Xia, HE Duan-Wei. High-Pressure and High-Temperature Sintering of Bulk Tungsten and W-TiC Alloy with Near-Full Densification and High Hardness[J]. Chinese Journal of High Pressure Physics, 2015, 29(4): 255-262. doi: 10.11858/gywlxb.2015.04.003

Citation:

CHEN Hong-Yang, PENG Fang, LIU Ping-Ping, WANG Yong-Kun, DUAN Wen-Rui, LIU Dong-Qiong, YANG Xing-Hui, LI Chun-Xia, HE Duan-Wei. High-Pressure and High-Temperature Sintering of Bulk Tungsten and W-TiC Alloy with Near-Full Densification and High Hardness[J]. Chinese Journal of High Pressure Physics, 2015, 29(4): 255-262. doi: 10.11858/gywlxb.2015.04.003

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High-Pressure and High-Temperature Sintering of Bulk Tungsten and W-TiC Alloy with Near-Full Densification and High Hardness

doi: 10.11858/gywlxb.2015.04.003

Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China

Received Date: 19 Jan 2015
Rev Recd Date: 27 Mar 2015

Abstract

Abstract

The pure bulk tungsten and W-TiC alloy were sintered by high-pressure and high-temperature (HPHT) method, and their densification behavior and hardness were systematically investigated.It is found that the pure tungsten sample sintered at the circumstance of 5.0 GPa and 1 500 ℃ for 15 min exhibits unique properties, its relative density and hardness are as high as 99.3% and 6.43 GPa, respectively.Moreover, the values for W-TiC alloy with TiC mass fraction of 1.5% are 99.0% and 7.58 GPa respectively under the same sintering conditions.It is concluded from the experimental results that the HPHT sintering method plays an important role in the aspects of accelerating the densification, improving the sintering efficiency and bringing down the sintering temperature.Furthermore, the relations of the sintering kinetics, microstructures and the evolutions of mechanical properties versus pressure and temperature were all explored for tungsten and W-TiC alloy.
- tungsten,
- W-TiC,
- densification,
- hardness,
- high pressure,
- grain size

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References(17)

References

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High-Pressure and High-Temperature Sintering of Bulk Tungsten and W-TiC Alloy with Near-Full Densification and High Hardness

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