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| 挤压铸造铝合金铸件内部温度测量及组织特征 | |
| 引用本文： | 李彦达,韩志强,黄晓然,万里,柳百成.挤压铸造铝合金铸件内部温度测量及组织特征[J].特种铸造及有色合金,2012,32(1):46-49. |
| 作者姓名： | 李彦达 韩志强 黄晓然 万里 柳百成 |
| 作者单位： | 1. 清华大学机械工程系,先进成形制造教育部重点实验室 2. 华中科技大学材料成形与模具技术国家重点实验室 3. 清华大学机械工程系,先进成形制造教育部重点实验室;清华大学汽车工程系,汽车安全与节能国家重点实验室 |
| 基金项目： | 国家自然科学基金资助项目，科技部国际科技合作计划资助项目，华中科技大学材料成形与模具技术国家重点实验室开放基金资助项目 |
| 摘 要： | 开发了一种挤压铸造过程直接测量铸件内部温度的方法,该方法能够对直接挤压铸造过程中铸件内部的温度变化进行连续多模次测量。采用该方法,对A356铝合金挤压铸造过程中铸件内部温度变化进行了测量,获得了不同挤压压力下阶梯试件不同部位的冷却曲线。采用光学显微镜对测温部位附近的凝固组织进行了观察,并测量了晶粒尺寸。通过将凝固组织与冷却曲线对照分析,研究了压力对凝固组织的影响。 |
| 关 键 词： | 铝合金 挤压铸造 温度测量 凝固组织 |
Temperature Measurement and Microstructure Characteristics in Squeeze Casting Aluminum Alloy Parts |
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| Li Yanda , Han Zhiqiang , Huang Xiaoran , Wan Li , Liu Baicheng.Temperature Measurement and Microstructure Characteristics in Squeeze Casting Aluminum Alloy Parts[J].Special Casting & Nonferrous Alloys,2012,32(1):46-49. | |
| Authors: | Li Yanda Han Zhiqiang Huang Xiaoran Wan Li Liu Baicheng |
| Affiliation: | 1,3(1.Key Laboratory for Advanced Materials Processing Technology,Ministry of Education,Department of Mechanical Engineering,Tsinghua University;2.State Key Laboratory of Materials Processing and Die & Mold Technology,Huazhong University of Science and Technology;3.State Key Laboratory of Automotive Safety and Energy,Department of Automotive Engineering,Tsinghua University) |
| Abstract: | A method for directly measuring the temperature variation in solidification process of squeeze casting has been developed.By using this method,the temperature change during solidification process in squeeze casting A356 aluminum alloy parts was measured,and cooling curves at different locations in a step-shaped parts under different applied pressures were obtained.The microstructure at the locations of temperature measured was observed by using optical microscope,and the grain size was determined.By comparatively analyzing microstructure with cooling curves,the effects of the applied pressure were discribed. |
| Keywords: | Aluminum Alloy Squeeze Casting Temperature Measurement Microstructure |
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