| TiAl基合金金属型真空吸铸成形方法研究 |
| |
| 引用本文： | 苏彦庆,叶喜葱,郭景杰,傅恒志. TiAl基合金金属型真空吸铸成形方法研究[J]. 稀有金属材料与工程, 2009, 38(9): 1505-1508 |
| |
| 作者姓名： | 苏彦庆 叶喜葱 郭景杰 傅恒志 |
| |
| 作者单位： | 哈尔滨工业大学,黑龙江,哈尔滨,150001 |
| |
| 基金项目： | NSCF(50271020, 50771041); Program of Excellent Team in Harbin Institute of Technology |
| |
| 摘 要： | 提出了一种钛铝基合金金属型真空吸铸成形新方法,并通过数值模拟研究了TiAl基合金薄板、叶片的充型规律.研究表明,在真空吸铸过程中,充型速度和石墨吸口直径的增加,有利于充型分数的提高,另外石墨吸口直径与反向充填出现的位置密切相关.在凝固过程中,合金从下而上逐层凝固,但随着铸型温度的增加,凝固了的合金在金属液中所占的比例减少.以数值模拟结果指导试验,得到质量良好的TiAl基合金薄板和叶片铸件.
|
| 关 键 词： | 真空吸铸 数值模拟 石墨吸口直径 凝固分数 充型分数 |
| 收稿时间： | 2008-10-08 |
Study on Vacuum Suction Casting for TiAl-Based Alloys |
| |
| Su Yanqing,Ye Xicong,Guo Jingjie and Fu Hengzhi. Study on Vacuum Suction Casting for TiAl-Based Alloys[J]. Rare Metal Materials and Engineering, 2009, 38(9): 1505-1508 |
| |
| Authors: | Su Yanqing Ye Xicong Guo Jingjie Fu Hengzhi |
| |
| Affiliation: | Harbin Institute of Technology, Harbin 150001, China |
| |
| Abstract: | A novel type of foundry method for TiAl-based alloy is presented in the present paper.The filling processes of Ti-47Al alloy sheet and blade have been studied via numerical simulation.The investigation results indicate that the filling fraction is en-hanced by the increase of filling velocity and graphite throat diameter.The graphite throat diameter is the main parameter for the backward filling location in the process of vacuum suction casting.With the increase of mould temperature, the solid fraction is r... |
| |
| Keywords: | vacuum suction casting numerical simulation graphite throat diameter solid fraction filling fraction |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《稀有金属材料与工程》浏览原始摘要信息 |
|
点击此处可从《稀有金属材料与工程》下载全文 |
|
