| KF稳定性判据的进一步分析 |
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| 引用本文： | 马东,黄卫东. KF稳定性判据的进一步分析[J]. 材料研究学报, 1994, 8(6): 501-506 |
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| 作者姓名： | 马东 黄卫东 |
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| 作者单位： | 西北工业大学凝固技术国家重点实验室 |
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| 摘 要： | 对ＫＦ稳定性判据做了进一步分析，得到一个新的界面稳定性判据：Ｇ≥ｍＧｃ－ｋΓＶ２／Ｄ２Ｖ／Ｄ，发现绝对稳定性不只出现在凝固速度极高的条件下，极高的温度梯度也会导致绝对稳定性．这个结果对快速凝固和激光表面处理技术具有指导意义．
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| 关 键 词： | 金属 凝固 定向凝固 平界面稳定性 激光表面处理 |
| 收稿时间： | 1994-12-25 |
| 修稿时间： | 1994-12-25 |
FURTHER ANALYSIS OF KF STABILITY CRITERION |
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| MA Dong,HUANG Weidong. FURTHER ANALYSIS OF KF STABILITY CRITERION[J]. Chinese Journal of Materials Research, 1994, 8(6): 501-506 |
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| Authors: | MA Dong HUANG Weidong |
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| Affiliation: | MA Dong,HUANG Weidong (The State Key Laboratory of Solidification Processing,Northwestern Polytechnical University) |
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| Abstract: | In this paper, KF stability equation is further analysed, and a new interface statility criterion, obtained. Furthermore, the united criterion of interface stability is interpreted. It is found that not only high solidification velocity but very high temperature gradient will lead to absolute interface stability, while the physical concept of absolute stability is perfected and the critical parameters of aboslute stability are given, and This result will be of much gudiance to rapid solidification and laser surface treatment techniques.Correspondent: MA Dong, The State Key Laboratory of Solidification Processing, Northwestern Polytechical University,Xi'an 710072 |
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| Keywords: | directional solidification interface stability |
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