7A04预拉伸厚板暗灰色条纹的分析  

Analysis of Dark Gray Fringes of 7A04 Pre- Stretched Thick Plate

作　　者：王美琪[1] 梁晓宁[1] 李晓波[1] 

机构地区：[1]东北轻合金有限公司,哈尔滨150060

出　　处：《黑龙江冶金》2015年第5期15-17,21,共4页

摘　　要：本文针对7A04预拉伸厚板出现的暗灰色条纹,从宏观组织、显微组织、机械性能、阳极氧化、热处理等多方面进行了观察与试验。证明7A04 45mm预拉伸厚板暗灰色条纹的实质是由于该处的化合物数量多于其它部位;暗灰色条纹的存在对7A04 45mm预拉伸厚板的机械性能没有影响,但是它影响板材加工件的外观质量。同时对暗灰色条纹的产生原因进行了讨论。In the this article observation and test have been done for thick dark grey stripe found in7A04 aluminum alloy pre- stretched,in the aspects of macrostructure,microstructure,mechanical properties,anodic oxidation,heat treatment and etc.,that proves thick dark gray stripe in 7A0445 mm pre- stretched is that the compound quantity is higher than other parts,and dark gray stripe does not affect on the mechanical properties of 7A04 45 mm pre- stretched thick plate,but it affects the appearance quality of plate processing. At the same time,the reasons of the dark gray stripe are discussed.

关 键 词：7A04板材 暗灰色条纹 化合物 

分 类 号：TG115[金属学及工艺—物理冶金]