第35卷第6期 2014年12月
热处理技术与装备
RECHULI JISHU YU ZHUANGBEI
Vol.35,No.6 Dee,2014
·性能研究·
用金相分析评价不同均匀化工艺处理的6063铝合金
雷登进，陈恩泽，廖金火，郑伟，赵亚峰（福建省南平铝业有限公司，福建南平353000）
摘要：本文通过试验探讨了在不同均匀化工艺制度下6063铝合金的金相组织、力学性能及两者之间相关性，试图利用金相分析评价不同均匀化工艺制度下6063铝合金的均匀化效果。结果表明，采用不同均匀化工艺处理的均匀化遥火样品与未处理过的铸态样品相比前者抗拉强度R。和规定非比例延伸强度Re2有所提高，但变化不大；而断后延伸率As在同一均匀化退火温度下随着保温时间的延长有很大提高。均匀化温度在575~590℃之间，保温时间在10h以上时，6063铝合金金相组织中枝晶网络上残留Mg,Si相相对较少，α-Al+Mg,Si共晶圈溶体溶解得比较彻底，其断后延伸率 As0m均能达到25%以上，均匀化效果较好。
关键调：6063铝合金；均匀化退火：金相分析；力学性能
中图分类号：TG115.21文献标志码：A
文章编号：16734971(2014)06-0035-05
6063AluminiumAlloysatDifferentHomogenizingProcess
AppraisedbyMetallographicAnalysis
LEI Deng-jin, CHEN En-ze,LIAO Jin-huo,ZHENG Wei-min,ZHAO Ya-feng
(Fujian Nanping Aluminium Co. , Ltd. ,Nanping Fujian 353000,China)
Abstract: In this paper, the metallographic structure and mechanical properties of 6063 aluminium alloys in different homogenizing process and the correlation between them were drscussed by the experiment. The effects of 6063 aluminium alloys treated at different homogenizing process was appraisd trying to use metal-lographic analysis. The results indicated that the tensile strength R. and proof strength at non-proportional extension R,o.2 of the specimens in different homogenizing process was greater than the as-cast specimens, but they became somewhat different. However, in the same homogenizing annealing temperatures,the elon-gation after fracture Aso mm increased greatly with the holding time prolonged. While the homogenizing an-nealing temperatures between 575 ~ 590 °C and holding time over 10 hours, the residual Mg,Si in the den-drite network in the metallographic structure of 6063 aluminium alloys were less and α-Al + Mg, Si eutectic solid solution dissolved more thoroughly. Also the elongation after fracture Ase nn of all the 6063 aluminium alloys was above 25% , the effect of homogenization was belter.
Key words : 6063 aluminium alloys; homogenization; metallographic analysis ;mechanical properties
由于铸造过程的非平衡结晶，变形铝合金锭都要经过均匀化退火。均匀化退火是将铸锭加热到接收稿日期：2014-07-19
近固相线或共晶温度，长时间保温后冷却到室温，使可溶解的相完全或接近完全溶解，形成过饱和固溶
作者简介：雷登进（196－），男，本科，高级工程师，主要从事物理检测及分析工作。
联系电话：05998737838;E-mail;leidengin@ mlfjnp.com
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