Effect of hot-pressing temperature on element diffusion behavior and microstructure of TC4/Ta layered composites

Yu Hao; Jiang Qingwei; Zhang Xiaoqing; Zhang Shoujian; Zhang Fengzhen

doi:10.7513/j.issn.1004-7638.2021.06.015

Volume 42 Issue 6

Dec. 2021

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Yu Hao, Jiang Qingwei, Zhang Xiaoqing, Zhang Shoujian, Zhang Fengzhen. Effect of hot-pressing temperature on element diffusion behavior and microstructure of TC4/Ta layered composites[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(6): 109-114. doi: 10.7513/j.issn.1004-7638.2021.06.015

Citation:

Yu Hao, Jiang Qingwei, Zhang Xiaoqing, Zhang Shoujian, Zhang Fengzhen. Effect of hot-pressing temperature on element diffusion behavior and microstructure of TC4/Ta layered composites[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(6): 109-114. doi: 10.7513/j.issn.1004-7638.2021.06.015

Citation:

Yu Hao, Jiang Qingwei, Zhang Xiaoqing, Zhang Shoujian, Zhang Fengzhen. Effect of hot-pressing temperature on element diffusion behavior and microstructure of TC4/Ta layered composites[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(6): 109-114. doi: 10.7513/j.issn.1004-7638.2021.06.015

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Effect of hot-pressing temperature on element diffusion behavior and microstructure of TC4/Ta layered composites

doi: 10.7513/j.issn.1004-7638.2021.06.015

1.
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
2.
Science and Technology Innovation Center of Kunming Iron and Steel Holding Co., Ltd., Kunming 650302, Yunnan, China

Received Date: 2021-11-02
Accepted Date: 2021-11-19
Publish Date: 2021-12-31

Abstract

Abstract

TC4/Ta/TC4 layered metal composites (LMCs) were prepared by hot-pressing at different temperatures, and the diffusion behavior of interfacial elements and the microstructure at different temperatures were discussed. The results show that obvious diffusion behavior occurs at the interface during the process of hot-pressing and holding, and the two groups achieve good metallurgical bonding. High temperature hot-pressing promotes the diffusion of Al, V, Ti and Ta, and the degree of diffusion significantly affects the microstructure near the interface. The diffusion depth of each element is closely related to the atomic radius. As the atomic radius decreases, the diffusion behavior occurs more intensely. The element diffusion behavior leads to the decrease in the phase transition temperature of the titanium matrix near the interface, and the basketweave structure appears at 950 ℃ below the phase transition temperature of TC4. The microstructure changes with the change of the interface distance.
- laminated metal composites,
- TC4,
- Ta,
- hot-pressing,
- element diffusion,
- microstructural evolution,
- interface,
- diffusion layer

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References(25)

References

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