Defect prediction and experimental study on investment casting of K4169 superalloy complex thin-walled parts
The filling and solidification processes in investment casting of typical K4169 nickel-based superalloy complex thin-walled casting are simulated by ProCAST finite element software.The temperature field during the casting process is analysed to predict the formation of defects. The complex thin-wall...
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Journal of Materials Engineering
2025-01-01
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| Series: | Cailiao gongcheng |
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| Online Access: | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000806 |
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| author | WANG Xiang ZHANG Ying SUI Dashan CHEN Zhongfeng DONG Anping GUO Zhao QI Fei YI Chushan GUI Daxing |
| author_facet | WANG Xiang ZHANG Ying SUI Dashan CHEN Zhongfeng DONG Anping GUO Zhao QI Fei YI Chushan GUI Daxing |
| author_sort | WANG Xiang |
| collection | DOAJ |
| description | The filling and solidification processes in investment casting of typical K4169 nickel-based superalloy complex thin-walled casting are simulated by ProCAST finite element software.The temperature field during the casting process is analysed to predict the formation of defects. The complex thin-walled casting is produced by investment casting with the same process parameters， and its shrinkage level， microstructure， and tensile mechanical properties are studied.The results show that when the pouring temperature is 1530 ℃ and the preheating temperature of the mold shell is 1000 ℃， the filling of the molten metal is stable. The solidification conforms to the principle of sequential solidification. The overall defects of the casting are less； the micro-shrinkage average volume fraction of different parts is counted， and the highest is only 1.01%； the minimum secondary dendrite arm spacing（SDAS） in the thin-walled region is only 18.4 μm， and the maximum secondary dendrite spacing in the thick part is 38.8 μm； the as-cast microstructure of K4169 alloy is dendritic structure. After standard heat treatment， the dendrites grow and coarsen， and the dendritic morphology in the grains is not obvious. The average room temperature tensile strength of the standard heat-treated K4169 alloy is 785.0 MPa， the average yield strength is 659.7 MPa， and the average elongation is 13.9%. The difference in shrinkage porosity level significantly affects the tensile strength and yield strength， but the elongation change is not obvious. |
| format | Article |
| id | doaj-art-8df46a4dd7b0419a84c1c5abcef64e06 |
| institution | Kabale University |
| issn | 1001-4381 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj-art-8df46a4dd7b0419a84c1c5abcef64e062025-01-21T09:44:41ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812025-01-0153113114210.11868/j.issn.1001-4381.2023.0008061001-4381（2025）01-0131-12Defect prediction and experimental study on investment casting of K4169 superalloy complex thin-walled partsWANG Xiang0ZHANG Ying1SUI Dashan2CHEN Zhongfeng3DONG Anping4GUO Zhao5QI Fei6YI Chushan7GUI Daxing8School of Materials Science and Engineering，Shanghai University of Engineering Science，Shanghai 201620，ChinaSchool of Materials Science and Engineering，Shanghai University of Engineering Science，Shanghai 201620，ChinaShanghai Key Lab of Advanced High-temperature Materials and Precision Forming，School of Materials Science and Engineering，Shanghai Jiao Tong University，Shanghai 200240，ChinaShanghai Key Lab of Advanced High-temperature Materials and Precision Forming，School of Materials Science and Engineering，Shanghai Jiao Tong University，Shanghai 200240，ChinaShanghai Key Lab of Advanced High-temperature Materials and Precision Forming，School of Materials Science and Engineering，Shanghai Jiao Tong University，Shanghai 200240，ChinaAECC South Industry Co.，Ltd.，Zhuzhou 412000，Hunan，ChinaAECC South Industry Co.，Ltd.，Zhuzhou 412000，Hunan，ChinaAECC South Industry Co.，Ltd.，Zhuzhou 412000，Hunan，ChinaShanghai Xinningkong Materials;Technology Co.，Ltd.，Shanghai 201306，ChinaThe filling and solidification processes in investment casting of typical K4169 nickel-based superalloy complex thin-walled casting are simulated by ProCAST finite element software.The temperature field during the casting process is analysed to predict the formation of defects. The complex thin-walled casting is produced by investment casting with the same process parameters， and its shrinkage level， microstructure， and tensile mechanical properties are studied.The results show that when the pouring temperature is 1530 ℃ and the preheating temperature of the mold shell is 1000 ℃， the filling of the molten metal is stable. The solidification conforms to the principle of sequential solidification. The overall defects of the casting are less； the micro-shrinkage average volume fraction of different parts is counted， and the highest is only 1.01%； the minimum secondary dendrite arm spacing（SDAS） in the thin-walled region is only 18.4 μm， and the maximum secondary dendrite spacing in the thick part is 38.8 μm； the as-cast microstructure of K4169 alloy is dendritic structure. After standard heat treatment， the dendrites grow and coarsen， and the dendritic morphology in the grains is not obvious. The average room temperature tensile strength of the standard heat-treated K4169 alloy is 785.0 MPa， the average yield strength is 659.7 MPa， and the average elongation is 13.9%. The difference in shrinkage porosity level significantly affects the tensile strength and yield strength， but the elongation change is not obvious.https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000806numerical simulationinvestment castingnickel-based superalloycomplex thin-walled castingmicro-shrinkage |
| spellingShingle | WANG Xiang ZHANG Ying SUI Dashan CHEN Zhongfeng DONG Anping GUO Zhao QI Fei YI Chushan GUI Daxing Defect prediction and experimental study on investment casting of K4169 superalloy complex thin-walled parts Cailiao gongcheng numerical simulation investment casting nickel-based superalloy complex thin-walled casting micro-shrinkage |
| title | Defect prediction and experimental study on investment casting of K4169 superalloy complex thin-walled parts |
| title_full | Defect prediction and experimental study on investment casting of K4169 superalloy complex thin-walled parts |
| title_fullStr | Defect prediction and experimental study on investment casting of K4169 superalloy complex thin-walled parts |
| title_full_unstemmed | Defect prediction and experimental study on investment casting of K4169 superalloy complex thin-walled parts |
| title_short | Defect prediction and experimental study on investment casting of K4169 superalloy complex thin-walled parts |
| title_sort | defect prediction and experimental study on investment casting of k4169 superalloy complex thin walled parts |
| topic | numerical simulation investment casting nickel-based superalloy complex thin-walled casting micro-shrinkage |
| url | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000806 |
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