铸造2012，Vol.61Issue(6)：621-625,5.
K418合金车用增压涡轮熔模铸造过程数值模拟及热裂预测
Hot Tearing Prediction and Numerical Simulation of Investment Casting Process of K418 Superalloy for Auto Turbocharger Turbine
石照夏 1董建新 1张麦仓 1郑磊1
作者信息
- 1. 北京科技大学高温材料研究室,北京100083
- 折叠
摘要
Abstract
Hot tearing defect easily occurs in K418 superalloy for auto turbocharger turbine. Filling process, solidification time, the temperature field, the forming process of shrinkage cavity and porosity and the stress field in the solidification process are simulated concerning with the practical production conditions. The hot tearing defect is predicted on the basis of the analysis results, and the simulation results are basically in accordance with the current production. The analysis results show that the main reason for the hot tearing of the turbine in this paper is the uneven distribution of the thermal stress during the solidification process.关键词
K418合金/车用增压涡轮/热裂/数值模拟/ProCAST软件Key words
K418 superalloy/ auto turbocharger turbine/ hot tearing, numerical simulation/ ProCAST software分类
矿业与冶金引用本文复制引用
石照夏,董建新,张麦仓,郑磊..K418合金车用增压涡轮熔模铸造过程数值模拟及热裂预测[J].铸造,2012,61(6):621-625,5.
