Numerical Simulation on Secondary Shrinkage Cavity of K417 Nickel-Based Superalloy Ingot with Large Height to Diameter Ratio

TAN Qingbiao; WANG Bo; DONG Hongzhi; WANG Donghong; ZHU Guoliang

doi:10.11973/jxgccl202209011

Materials and Mechanical Engineering > 2022 > 46(9): 64-69. > DOI: 10.11973/jxgccl202209011

TAN Qingbiao, WANG Bo, DONG Hongzhi, WANG Donghong, ZHU Guoliang. Numerical Simulation on Secondary Shrinkage Cavity of K417 Nickel-Based Superalloy Ingot with Large Height to Diameter Ratio[J]. Materials and Mechanical Engineering, 2022, 46(9): 64-69. DOI: 10.11973/jxgccl202209011

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Numerical Simulation on Secondary Shrinkage Cavity of K417 Nickel-Based Superalloy Ingot with Large Height to Diameter Ratio

1. Shanghai Key Lab of Advanced High-Temperature Materials and Precision Forming, School of Materials Scienceand Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
2. Longda Superalloy Aviation Materials Co., Ltd., Wuxi 214104, China

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Received Date: August 03, 2021
Revised Date: August 14, 2022

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Abstract

ProCAST finite element analysis software was used to numerically simulate the filling and solidification process of K417 nickel-based superalloy ingot with large height-diameter ratio. The location, quantity and cause of the formation of secondary shrinkage defects in the solidification process of the alloy ingot, and the influence of pouring temperature and pouring speed on secondary shrinkage defects was simulated and studied, and were verified by experiments. The results show that the shrinkage defect distribution of alloy ingot obtained by numerical simulation was consistent with that of onsite casting ingot, indicating the accuracy of numerical simulation. The secondary shrinkage defects could be mitigated by increasing the pouring temperature and decreasing the pouring speed to some extent. However, the defects could not be completely eliminated. Under the condition of 1 530 ℃ and 1.40 kg·s^-1 pouring speed, the alloy ingots had the fewest shrinkage defects.
- cast nickel-base superalloy,
- pouring process,
- large height to diameter ratio,
- secondary shrinkage cavity,
- numerical simulation

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Numerical Simulation on Secondary Shrinkage Cavity of K417 Nickel-Based Superalloy Ingot with Large Height to Diameter Ratio

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