【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。更多还原

【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;更多还原