Effect of spark plasma sintering temperature on structure and properties of TiB<sub>2</sub>/Al composites

Lu Chao; Zhang Ao; Yang Zhi; Liu Jia; An Xuguang; Kong Qingquan; Feng Wei; Xu Zhiping

doi:10.7513/j.issn.1004-7638.2022.03.008

Volume 43 Issue 3

Jun. 2022

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Lu Chao, Zhang Ao, Yang Zhi, Liu Jia, An Xuguang, Kong Qingquan, Feng Wei, Xu Zhiping. Effect of spark plasma sintering temperature on structure and properties of TiB2/Al composites[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(3): 47-52. doi: 10.7513/j.issn.1004-7638.2022.03.008

Citation:

Lu Chao, Zhang Ao, Yang Zhi, Liu Jia, An Xuguang, Kong Qingquan, Feng Wei, Xu Zhiping. Effect of spark plasma sintering temperature on structure and properties of TiB₂/Al composites[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(3): 47-52. doi: 10.7513/j.issn.1004-7638.2022.03.008

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Effect of spark plasma sintering temperature on structure and properties of TiB₂/Al composites

doi: 10.7513/j.issn.1004-7638.2022.03.008

Lu Chao^{1, 2
,},
Zhang Ao¹,
Yang Zhi¹,
Liu Jia¹,
An Xuguang^{1, 2},
Kong Qingquan^{1, 2},
Feng Wei^{1, 2},
Xu Zhiping¹

1.
School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China
2.
Sichuan Province Engineering Research Center for Powder Metallurgy, Chengdu 610106, Sichuan, China

Received Date: 2022-03-26
Publish Date: 2022-06-30

Abstract

Abstract

TiB₂/Al composites were fabricated by spark plasma sintering using aluminum powders as matrix and TiB₂ particles as reinforcement. The effects of different sintering temperatures (500, 525 ℃ and 550 ℃) on the phase composition, relative density, microhardness and tensile/compressive properties of the composites were investigated. The results show that the principal phase of these composites is α-Al, and a small amount of TiB₂ phase precipitates when the sintering temperature is higher than 525 ℃. With increasing the sintering temperature, the relative density, microhardness, tensile strength and compressive strength of TiB₂/Al composites firstly increases and then decreases, while the elongation and compressibility are minished first and then increased. TiB₂/Al composite sintered at 525 ℃ has the optimal comprehensive properties, demonstrating the highest relative density and Vickers hardness of 98.57% and 49.83, respectively, and the maximum tensile strength of 84.9 MPa and compressive strength of 265.1 MPa. When the sintering temperature is as high as 550 ℃, voids are formed in the bulk material and transgranular fracture occurs during the tensile process.
- TiB₂/Al composites,
- spark plasma sintering,
- temperature,
- tensile strength,
- compressive strength

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References(28)

References

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