Al-Si过共晶合金中初生硅溶解特性的实验研究

张蓉;耿兴国;王六定;熊玉华;张元雯;刘林

航空材料学报 ›› 1995, Vol. 15 ›› Issue (3) : 39-43.

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航空材料学报 ›› 1995, Vol. 15 ›› Issue (3) : 39-43.
论文

Al-Si过共晶合金中初生硅溶解特性的实验研究

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AN EXPERIMENTAL STUDY ON THE DIS50LUTION OF PRIMARY SILICON IN Al-Si HYPEREUTECTIC ALLOY

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摘要

利用等温液淬及快速凝固技术研究了Al-18.08%Si合金中初生硅在液态中的溶解行为。实验表明,合金液加热到1000℃以下,保温2h,初生硅仍未完全溶入液态合金。初生硅的溶解速率随时间延长而减小。快速凝固证实初生硅在液态合金中具有较高的化学稳定性。

Abstract

The dissolution behavior of primary silicon phase in Al-18.08%Si alloy melts has been studied by useof isothermal holding of the melt with quench interrupting and rapid solidification techniques. Resultsshow that the primary silicon could not be cornpletely dissolved even though the sample was kept at 1000℃up to 2 hours.The dissolution rate is decreased with the holding time. Rapid solidification experimentsconfirm that the primary silicon particles is of higher chemical stability In the alloy melt.

关键词

铝硅合金 / 初生硅 / 溶解 / 凝固

Key words

aluminiurn silicon a / primary silicon / dissolution / solidification

引用本文

导出引用
张蓉, 耿兴国, 王六定, 熊玉华, 张元雯, 刘林. Al-Si过共晶合金中初生硅溶解特性的实验研究[J]. 航空材料学报, 1995, 15(3): 39-43
Zhang Rong, Geng Xingguo, Wang Liuding, Xiong Yuhua, Zhang Yuanwen, Liu Lin. AN EXPERIMENTAL STUDY ON THE DIS50LUTION OF PRIMARY SILICON IN Al-Si HYPEREUTECTIC ALLOY[J]. Journal of Aeronautical Materials, 1995, 15(3): 39-43

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