5083铝合金板材表面裂纹产生原因分析  

Cause analysis of 5083 aluminum alloy plate surface crack

作　　者：王立娟[1] 苏玉洁[1] 张洪梅[1] 郭红[1] 

机构地区：[1]东北轻合金有限责任公司,黑龙江哈尔滨150060

出　　处：《轻合金加工技术》2010年第9期12-14,共3页Light Alloy Fabrication Technology

摘　　要：为了查明某批次5083铝合金板材表面出现的裂纹的本质及形成的原因,在带有裂纹的板材上取样进行试验研究。通过宏观组织和显微组织检查,以及能谱分析,结果表明,由于铸锭表面存在一定深度和长度的凹痕处聚集了氧化物和非金属元素,造成铸锭经轧制后在板材上形成了贯通其表面的裂纹。To check the reason of cracks appeared on the 5083 aluminum alloy plate,the plate with cracks has been cut as samples for investigation.The macrostructure,microstructure and spectrometer analyses show that certain dents with different sizes and depth exist on the slab surface,and some oxides and nonmetallic elements congregate at the dents.That is the reason causing the cracks on the plate and some cracks even penetrate the plate.

关 键 词：5083铝合金 板材 裂纹 

分 类 号：TG339[金属学及工艺—金属压力加工]