| 引用本文: | 隋艳伟,程成,冯坤,王冉,戚继球,何业增,孙智.定向凝固钛铝合金熔体与铸型界面反应研究展望[J].材料科学与工艺,2016,24(2):91-96.DOI:10.11951/j.issn.1005-0299.20160213. |
| SUI Yanwei,CHENG Cheng,FENG Kun,WANG Ran,QI Jiqiu,HE Yezeng,SUN Zhi.Research and prospects of interfacial reaction between TiAl alloys melt and mold during direction solidification[J].Materials Science and Technology,2016,24(2):91-96.DOI:10.11951/j.issn.1005-0299.20160213. |
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| 摘要: |
| 钛铝合金是性能优异的高温合金，在航空航天领域有广泛的应用前景，但由于其熔体具有较高的活性，制备时熔体与所有已知的铸型材料会发生不同程度的反应，限制了钛铝合金铸件的发展.定向凝固技术作为制备高精度钛铝合金的新工艺，使铸件组织定向排列，可以进一步提高钛铝合金的使用性能，因此如何调控凝固过程中钛铝合金熔体与铸型材料间的界面反应成为目前有关定向凝固钛铝合金研究的一个热点.从目前国内外关于钛铝合金熔体与铸型材料间界面反应的研究出发，综述了定向凝固过程中铸型材料、涂层成分、工艺参数及合金元素等对界面反应的影响，介绍了界面反应的理论水平，系统收集了界面反应的各项研究结果.
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| 关键词: 定向凝固 钛铝合金 铸型 界面反应 影响因素 |
| DOI：10.11951/j.issn.1005-0299.20160213 |
| 分类号:TG146.2 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(51304198)；江苏省自然科学基金(20141131)；江苏省产学研项目(BY:2014028-08). |
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| Research and prospects of interfacial reaction between TiAl alloys melt and mold during direction solidification |
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SUI Yanwei,CHENG Cheng,FENG Kun,WANG Ran,QI Jiqiu,HE Yezeng,SUN Zhi
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(School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou 221116, China)
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| Abstract: |
| Titanium aluminum alloys exhibit a large number of outstanding properties at elevated temperatures, and are considered as potential high temperature structural materials for the aerospace and automotive industries. However, it is prone to interfacial reaction between alloy and mold during melting and casting due to the molten alloy with high chemical reactivity. The industrial scale manufacture and applications of TiAl-based components is still being hindered by this reason. As a new process for preparation of high precision titanium-aluminum alloys, directional solidification technology via controlling the crystallographic orientation can get a well-balanced of mechanical properties. Therefore, how to control the interfacial reaction between titanium alloy melt and mold during solidification becomes a research focus in the field of titanium alloy by directional solidification. Some experimental methods are presented to characterize the interfacial reaction between TiAl alloys and mold materials. The effects of mold materials, processing parameters, coated composition and alloying elements on the interfacial reaction are reviewed. Furthermore, the theoretical research status oil interfacial reaction is introduced, and some results of the interfacial reaction research are collected systematically.
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| Key words: directional solidification TiAl alloys mold interfacial reaction influential factors |
