| 吸铸TiAl基合金铸件内部气孔缺陷产生原因 |
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| 引用本文： | 韩宝帅,骆良顺,孟宪宇,薛祥,王亮,苏彦庆,郭景杰.吸铸TiAl基合金铸件内部气孔缺陷产生原因[J].稀有金属材料与工程,2018,47(5):1631-1636. |
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| 作者姓名： | 韩宝帅 骆良顺 孟宪宇 薛祥 王亮 苏彦庆 郭景杰 |
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| 作者单位： | 哈尔滨工业大学材料科学与工程学院,哈尔滨工业大学材料科学与工程学院,哈尔滨工业大学材料科学与工程学院,哈尔滨工业大学材料科学与工程学院,哈尔滨工业大学材料科学与工程学院,哈尔滨工业大学材料科学与工程学院,哈尔滨工业大学材料科学与工程学院 |
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| 基金项目： | 国家自然科学基金资助(项目号51425402,51371066,51331005) |
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| 摘 要： | 本文旨在探索底漏式真空吸铸方法成形TiAl基合金排气阀件过程中的气孔缺陷的产生原因。通过比较不同工艺参数下吸铸成形的TiAl基合金排气阀内部孔洞缺陷形貌与分布状态，确定了缺陷的种类为气孔。结合数值模拟计算吸铸过程中合金熔体流动形态的结果，得到排气阀内部气孔缺陷形成的原因。通过优化真空吸铸过程的工艺参数，可以成功消除排气阀铸件内的气孔缺陷。
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| 关 键 词： | TiAl基合金 真空吸铸 排气阀 气孔 工艺参数 |
| 收稿时间： | 2016/5/4 0:00:00 |
| 修稿时间： | 2016/9/21 0:00:00 |
Analysis of blowhole generation reason and method of eliminate blowhole on the vacuum suction casting exhaust valve of TiAl based alloys |
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| Han Baoshuai,Luo Liangshun,Meng Xianyu,Xue Xiang,Wang Liang,Su Yanqing and Guo Jingjie.Analysis of blowhole generation reason and method of eliminate blowhole on the vacuum suction casting exhaust valve of TiAl based alloys[J].Rare Metal Materials and Engineering,2018,47(5):1631-1636. |
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| Authors: | Han Baoshuai Luo Liangshun Meng Xianyu Xue Xiang Wang Liang Su Yanqing and Guo Jingjie |
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| Affiliation: | School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology |
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| Abstract: | This paper aims to explore the generation mechanism of blowhole defects in TiAl based alloys exhaust valve in the process of vacuum suction casting. By comparing the morphology and distribution of void defects in TiAl based alloys exhaust valve fabricated by different process parameters, the type of void defects is identified as blowhole. Combining with numerical simulation of calculating the fluid state of the alloy melt in the suction casting process, the reason of blowhole formation is determined. By optimizing the casting parameters in the process, blowhole is eliminated ultimately. |
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| Keywords: | TiAl based alloy suction casting exhaustSvalve blowhole process parameters |
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