AlCuMgZn单晶合金的空间凝固

罗兴宏; 封少波; 李洋

doi:10.11728/cjss2016.04.445

AlCuMgZn单晶合金的空间凝固

doi: 10.11728/cjss2016.04.445

中国科学院金属研究所核用材料与安全评价重点实验室沈阳 110016

基金项目: 中国载人空间站工程项目资助（TGJZ800-2-RW024）

详细信息

作者简介:
罗兴宏,xhluo@imr.ac.cn

中图分类号: V524
计量
- 文章访问数: 987
- HTML全文浏览量: 70
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- 被引次数: 0
出版历程
- 收稿日期: 2015-11-10
- 修回日期: 2016-04-18
- 刊出日期: 2016-07-15

Solidification of AlCuMgZn Single Crystal in Space

Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 100161

摘要

摘要: 重力对合金凝固过程与缺陷形成具有重要影响.在常规地面条件下难以清晰揭示凝固过程中的重力效应及其作用规律，而在微重力环境中重力对熔体的作用以及对凝固过程的影响大大降低.利用天宫二号空间实验并结合地面对比实验，研究AlCuMgZn单晶合金在微重力和重力环境下枝晶生长形貌和特征参数差异以及成分偏析和缺陷形成的异同，揭示重力对枝晶生长过程和成分偏析等现象的影响及其在凝固缺陷形成中的作用.
- Al合金 /
- 单晶合金 /
- 空间微重力 /
- 定向凝固
Abstract: Gravity plays an important role in alloy solidification process and defect formation. However, it is difficult to reveal the effects of gravity and study the mechanisms through traditional ground-based solidification experiments. Under microgravity conditions, the effects of gravity on molten melt and solidification process will be significantly diminished. Therefore, in order to explore the role of gravity in dendrite growth process and solute segregation as well as solidification defect formation, by using the microgravity environment in space, and combining with ground-based comparison experiments, the dendritic morphologies, characteristics sizes as well as solute segregation and defect formation under normal gravity and microgravity of AlCuMgZn single crystal alloy are planning to be comparatively investigated during Tiangong-2 mission. In this paper, the progress of the project, such as the research contents, sample and ampoule design, space experimental scheme and main ground-based tests and results are introduced.
- Al alloy /
- Single crystal alloy /
- Microgravity in space /
- Directional solidification

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参考文献(26)

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