B对电解低钛铝制备的6009铝合金微观组织的影响  

Effects of Boron on Microstructure of 6009 Aluminum Alloy Prepared with Electrolytic Low Ti Aluminum

作　　者：王明星[1] 朱小瑜[2] 李军正[1] 

机构地区：[1]郑州大学物理工程学院,材料物理教育部重点实验室 [2]河南工程学院机电工程系

出　　处：《特种铸造及有色合金》2008年第1期15-17,共3页Special Casting & Nonferrous Alloys

基　　金：河南省重大科技攻关资助项目(0322020600)

摘　　要：研究了Al-B中间合金对工业纯铝和电解低钛铝制备的6009铝合金微观组织的影响。结果表明,Al-B中间合金对纯铝制备的6009合金的晶粒细化作用很弱,而对电解低钛铝制备的6009合金有明显的细化作用。对电解低钛铝制备的6009合金而言,当Ti含量为0.05%时,晶粒细化效果在w(B)/w(Ti)=1∶5时最好;而在w(B)/w(Ti)=1∶2.22时晶粒明显粗化,之后合金的晶粒尺寸又随着B含量的增加而有所下降。Effects of Al-B master alloy on microstructure of 6009 aluminum alloy prepared with commercial pure aluminum and with electrolytic low Ti aluminum have been investigated.The results indicate that the refinement effect of Al-B master alloy on 6009 aluminum alloy prepared with commercial pure aluminum can be neglected,however,the refinement effects of it on that prepared with electrolytic low Ti aluminum is significant.The desirable refinement effects on the alloy prepared with electrolytic low Ti aluminum can be observed with 0.05% Ti content at the ratio of 1∶5 for B/Ti,however,the grain size in the alloy obviously becomes coarse at the ratio of 1∶2.22 for B/Ti.And the grain size can be decreased gradually with the increase of B content.

关 键 词：Al—B中间合金 电解低钛铝 晶粒细化 

分 类 号：TF821[冶金工程—有色金属冶金]