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Effect of Pouring and Preheating Temperature on Shrinkage Cavity and Porosity Defects of Nickel-Based Cast Superalloy

文献类型：期刊论文

作者Zhao, Long1,2; Liu, Zhongqiu1,2; Zhang, Yingqi2; Zhang, Long3; Ma, Yingche3; Li, Baokuan2
刊名METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
出版日期2025-01-08
页码18
ISSN号1073-5615
DOI10.1007/s11663-024-03420-8
通讯作者Liu, Zhongqiu(liuzq@smm.neu.edu.cn)
英文摘要A three-dimensional flow-heat transfer-solidification coupled model was developed based on the finite element method to simulate the shrinkage cavity and porosity defects of a novel nickel-based cast superalloy K4800. The influence of pouring and preheating temperatures on shrinkage volume, Niyama value at the solidification front, temperature gradient, and cooling rate were investigated. Wire cutting experiments on ingots obtained by casting in molds made of 45-gage steel, which were then polished to capture images of shrinkage and shrinkage defects within them. By comparing the simulation results with this image, we found that the model has high accuracy, and the critical value of the Niyama criterion is determined to be 33.75 ( degrees Cs)1/2/cm. The results indicate that the temperature gradient exerts a significantly greater influence than the cooling rate within the Niyama criterion. The effect of pouring temperature on the Niyama value is concentrated in the part of the ingot above 87 cm, and the effect of preheating temperature is negligible. Increasing the pouring temperature from 1400 degrees C to 1500 degrees C dramatically reduces shrinkage cavity volume, reaching its minimum at 1500 degrees C. The effect of preheating temperature on shrinkage cavity volume is significantly less compared to pouring temperature. The shrinkage cavity volume decreases only slightly with increasing preheating temperature, and its effect can be disregarded when pouring temperature is high. The comparison of shrinkage cavity volume values under different process parameters reveals that the volume is minimized at a pouring temperature of 1500 degrees C and a preheating temperature of 35 degrees C.
资助项目National Natural Science Foundation of China[52171031] ; Excellent Youth Fund of Liaoning Natural Science Foundation[2023JH3/10200001] ; Liaoning Xingliao Talents-Top-notch Young Talents Project[XLYC2203064]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001391717600001
出版者SPRINGER
资助机构National Natural Science Foundation of China ; Excellent Youth Fund of Liaoning Natural Science Foundation ; Liaoning Xingliao Talents-Top-notch Young Talents Project
源URL  
专题金属研究所_中国科学院金属研究所
通讯作者Liu, Zhongqiu
作者单位1.Northeastern Univ, Key Lab Ecol Met Multimet Mineral, Minist Educ, Shenyang 110819, Peoples R China
2.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Long,Liu, Zhongqiu,Zhang, Yingqi,et al. Effect of Pouring and Preheating Temperature on Shrinkage Cavity and Porosity Defects of Nickel-Based Cast Superalloy[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2025:18.
APA Zhao, Long,Liu, Zhongqiu,Zhang, Yingqi,Zhang, Long,Ma, Yingche,&Li, Baokuan.(2025).Effect of Pouring and Preheating Temperature on Shrinkage Cavity and Porosity Defects of Nickel-Based Cast Superalloy.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,18.
MLA Zhao, Long,et al."Effect of Pouring and Preheating Temperature on Shrinkage Cavity and Porosity Defects of Nickel-Based Cast Superalloy".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE (2025):18.

入库方式： OAI收割

来源：金属研究所

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