Dynamic in-situ observation of solidification process of GH5188 alloy

Jiang Shichuan; Zhang Jian; Pei Binghong; Chen Qi; Wang Fu

doi:10.7513/j.issn.1004-7638.2023.03.020

Volume 44 Issue 3

Jun. 2023

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Jiang Shichuan, Zhang Jian, Pei Binghong, Chen Qi, Wang Fu. Dynamic in-situ observation of solidification process of GH5188 alloy[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 131-137. doi: 10.7513/j.issn.1004-7638.2023.03.020

Citation:

Jiang Shichuan, Zhang Jian, Pei Binghong, Chen Qi, Wang Fu. Dynamic in-situ observation of solidification process of GH5188 alloy[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 131-137. doi: 10.7513/j.issn.1004-7638.2023.03.020

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Dynamic in-situ observation of solidification process of GH5188 alloy

doi: 10.7513/j.issn.1004-7638.2023.03.020

Jiang Shichuan^{1, 2
,},
Zhang Jian^{1, 2},
Pei Binghong³,
Chen Qi^{1, 2},
Wang Fu³

1.
Chengdu Institute of Advanced Metallic Material Technology and Industry Co., Ltd. Chengdu 610303, Shichuan, China
2.
State Key Laboratory of Metal Material for Marine Equipment and Application, Liaoning Anshan 114009
3.
Pangang Group Jiangyou Changcheng Special Steel Co., Ltd., Jiangyou 621704, Sichuan, China

Received Date: 2022-07-21
Publish Date: 2023-06-30

Abstract

Abstract

The solidification process of the GH5188 alloy at cooling rates of 10-200 ℃/ min was dynamically in-situ observed by high-temperature confocal laser scanning microscopy (CLSM). The effects of cooling rates on the solidification process, structure and precipitates of the GH5188 alloy were studied. The results show that the solidification process for the GH5188 alloy is slow-rapid-slow solidification. The higher the cooling rate, the greater the peak solidification rate is obtained. The cooling rate affects the solidification temperature of the alloy, and the solidification temperature decreases with the increase in the cooling rate. With the increase in cooling rate, the secondary dendrite arm spacing of the alloy after solidification decreases. The size of precipitates is more uniform and refined, which is conducive to reducing the crack sensitivity of the alloy during solidification. The secondary dendrite arm spacing prediction formula is obtained under different cooling rates.
- GH5188,
- CLSM,
- solidification,
- in-situ observation,
- cooling rate

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References(5)

References

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