Optimization of investment casting parameters for reduction of shrinkage porosity in nickel-based superalloy castings by Taguchi method

被引：6
作者：
Zhang, Peng [1 ]
Liu, Guohuai [2 ]
Wang, Ye [3 ]
Wu, Shiping [4 ]
Wang, Zhaodong [2 ]
机构：
[1] Zaozhuang Univ, Sch City & Architecture Engn, Zaozhuang 277160, Peoples R China
[2] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China
[3] Harbin Univ Sci & Technol, Sch Mat Sci & Chem Engn, Harbin 150001, Peoples R China
[4] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2021年 / 35卷 / 10期
关键词：
Nickel-based superalloy; investment casting; shrinkage porosity; Taguchi method; optimization; ALLOY; COMPOSITES; SIMULATION; EVOLUTION; BEHAVIOR; DESIGN;
D O I：
10.1142/S0217979221501368
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In order to improve the castings quality of nickel-based superalloy in investment casting process, especially to reduce the shrinkage porosity, the processing parameters were optimized by numerical simulation and Taguchi method. The effects of processing parameters, such as pouring temperature, pouring time and mold shell preheating temperature, on the shrinkage porosity in the turbine nozzle investment castings prepared by K477 nickel-based superalloy were investigated. The results show that the effects of the mold shell preheating temperature, pouring temperature and pouring time are main inuencing factors in turn, which are verified by the evaluation of signal-to-noise ratio and the analysis of variance. Further, based on the processing optimization, a K477 alloy turbine nozzle without shrinkage porosity was prepared with the optimized parameters: pouring temperature of 1450 degrees C, mold shell preheating temperature of 1050 degrees C and pouring time of 14 s, respectively.
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页数：11
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