Y<sub>2</sub>O<sub>3</sub> dispersion strengthened TC4 powder and its laser cladding microstructure

Zhang Chengyang; He Siyi; Yang Wei; Guo Shuangquan; Wang Ning; Xu Yi

doi:10.7513/j.issn.1004-7638.2023.01.012

Volume 44 Issue 1

Feb. 2023

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Zhang Chengyang, He Siyi, Yang Wei, Guo Shuangquan, Wang Ning, Xu Yi. Y2O3 dispersion strengthened TC4 powder and its laser cladding microstructure[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 64-71. doi: 10.7513/j.issn.1004-7638.2023.01.012

Citation:

Zhang Chengyang, He Siyi, Yang Wei, Guo Shuangquan, Wang Ning, Xu Yi. Y₂O₃ dispersion strengthened TC4 powder and its laser cladding microstructure[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 64-71. doi: 10.7513/j.issn.1004-7638.2023.01.012

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Y₂O₃ dispersion strengthened TC4 powder and its laser cladding microstructure

doi: 10.7513/j.issn.1004-7638.2023.01.012

Zhang Chengyang^1
,,
He Siyi¹,
Yang Wei²,
Guo Shuangquan³,
Wang Ning^{4, 5},
Xu Yi^{1
,
,}

1.
School of Materials Science and Engineering, Southwest Jiaotong University, Key Laboratory of Advanced Materials Technology, Ministry of Education, Chengdu 610031, Sichuan, China
2.
China Aviation Development Shenyang Liming Aeroengine Co., Ltd, Shenyang110043, Liaoning, China
3.
Chengdu Tianxiang Power Technology Research Institute Co., Ltd., Chengdu 610095, Sichuan, China
4.
Sichuan Hitaipu Technology Co., Ltd., Chengdu 610095, Sichuan, China
5.
Sichuan Liuhe Special Metallic Materials Co., Ltd., Jiangyou 621700, Sichuan, China

Received Date: 2022-11-02
Publish Date: 2023-02-28

Abstract

Abstract

Laser cladding repairing technology can be used to repair damaged TC4 alloy components. Compared with forged components, oxygen is more easily introduced during laser cladding, which results that cladding components have the problems of high oxygen content and low strength. In this study, TC4-xY (x = 0, 0.1, 0.3, 0.5) prealloyed powder was prepared by plasma rotating electrode process (PREP), then TC4 alloy components were laser cladding repaired with the powder. The results indicate that the introduction of yttrium (Y) induces Y₂O₃ dispersion evenly distributed on the powder, as the Y content increases, Micro Vickers hardness of the powder rises. In the TC4-xY cladding layers, the Micro Vickers hardness rises with the increase of Y content. However, because of the excessive precipitation of brittle phase, the tensile property of the cladding layers shows a trend from rise to decline, then the elongation just shows the reverse trend. The 1058 MPa tensile property of the TC4-0.3Y cladding layer is the most excellent, then its 7.2% elongation is the worst. The regulation of Y content is conducive to improving the tensile strength of the cladding layer.

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References(22)

References

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