摘要
采用电磁搅拌协同转棒诱导形核法制备了Al-25Si合金半固态浆料,研究了转棒转速及搅拌电流对合金半固态显微组织的影响。结果表明,转速及电流过高或过低时,初生Si的尺寸较大且会聚集。当转速为500r/min、搅拌电流为25A时,能够获得分布均匀,尺寸约为25μm的初生Si颗粒且其边缘钝化。
A new type of semi-solid processing method that was electromagnetic stirring with rotating-rod induced nucleation（ES-RRIN）was used to fabricate semi-solid slurry of hypereutectic Al-25 Si alloy.Effects of rotating speed and stirring current on primary Si particles（PSPs）in hypereutectic Al-25 Si alloy were investigated.The results reveal that the size of PSPs is coarsen with agglomeration to some extent at a higher or lower rotating speed and current.The primary Si size reaches approximately 25μm with spherodization and uniform distribution at 500r/min and 25 A.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2015年第4期369-372,共4页
Special Casting & Nonferrous Alloys
基金
云南省人才培养基金资助项目(2009CI024)
