微量合金元素Ti、Zr、Sc对5A06铝合金棒材粗晶组织的影响  

Effect of Ti,Zr, and Sc on Coarse Grain Microstructure of 5A06 Aluminum Alloy Bars

作　　者：林顺岩 周志军 温庆红 姚勇 杜君 

机构地区：[1]西南铝业(集团)有限责任公司,重庆401326

出　　处：《铝加工》2017年第6期14-21,共8页Aluminium Fabrication

摘　　要：考察了微量合金元素Ti、Zr、Sc及其复合作用对5A06合金粗晶组织的影响,并对合金挤压棒材形成粗晶组织的机理进行了探讨。结果表明:5A06合金挤压时主要以动态再结晶为主,粗晶组织主要是在挤压生产过程中产生的。单独增加Ti的含量,或者添加Ti、Zr元素,对抑制和消除合金挤压棒材粗晶组织的效果不明显;采用微量合金元素Ti、Zr、Sc共同复合,充分发挥合金元素Ti、Zr、Sc复合微合金化抑制合金再结晶的作用,可有效抑制合金挤压棒材粗晶组织的形成。Effect of coarse microstructure on trace elements Ti,Zr, and Sc and its compound action was investigated, and formation mechanism of coarse microstructure of aluminum alloy extruded bars were discussed as well. The results show that dynamic recrystallization is the main one during extruding 5 A06 alloy, coarse microstructure is occurred during extruding. Added Ti only, or added Ti and Zr can not remove coarse microstructure obviously; but common compound of Ti,Zr, and Sc can be used to control the formation of coarse microstructure of extruded bar.

关 键 词：5A06铝合金 粗晶组织 微合金化 均匀化热处理 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG376.8[金属学及工艺—金属材料]