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电磁连铸过程中电磁场对变形镁合金凝固组织的影响

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Indexed by:期刊论文

Date of Publication:2007-09-10

Journal:铸造

Included Journals:Scopus、PKU、ISTIC、CSCD

Volume:56

Issue:9

Page Number:914-917

ISSN No.:1001-4977

Key Words:电磁连铸;镁合金;显微组织;凝固机理

Abstract:采用软接触电磁连铸和普通连铸的方法分别制备了AZ61镁合金铸锭,结果表明软接触电磁连铸铸锭的组织均匀,晶粒细化,晶界上二次相析出减少,第二相呈断续状弥散分布,Al元素含量在晶内增加,而在晶界处降低.针对上述现象探讨了连铸过程中电磁场作用下AZ61镁合金的组织凝固机理,提出第二相"磁致弥散"的思想,并推导了软接触电磁连铸的热力学关系.

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