李明,程丛高,李敏伟.退火温度对LF6M铝合金组织及其阳极氧化膜微观结构的影响[J].表面技术,2010,39(6):33-35,86.
LI Ming,CNENG Cong-gao,LI Min-wei.The Influence of Annealing Temperature on Microstructure of LF6M Aluminum Alloy Substrates and Anodic Oxide Films[J].Surface Technology,2010,39(6):33-35,86 |
| 退火温度对LF6M铝合金组织及其阳极氧化膜微观结构的影响 |
| The Influence of Annealing Temperature on Microstructure of LF6M Aluminum Alloy Substrates and Anodic Oxide Films |
| 投稿时间：2010-08-10 修订日期：2010-12-10 |
| DOI： |
| 中文关键词: LF6M铝合金 退火温度 阳极氧化 β相 |
| 英文关键词:LF6M aluminum alloy annealing temperature anodic oxide β-particles |
| 基金项目: |
|
|
|
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 将220℃退火的LF6M铝合金试样在320℃重新进行热处理,观察了220℃退火试样和320℃退火试样的金相组织和晶界显微结构,对比研究了2种退火状态的LF6M铝合金在硫酸溶液中的阳极极化行为,并观察了2种基材上硫酸阳极氧化膜的微观结构。结果表明:220℃退火试样中的β相沿晶界集中分布,在320℃重新热处理后,β相在晶界及晶内均匀分布,晶界腐蚀敏感性减弱;β相粒子在阳极氧化过程中优先溶解,会造成氧化膜中的微小孔洞缺陷,因此220℃退火试样阳极氧化时,氧化膜中因孔洞缺陷的集中形成了更大的局部缺陷,防护性能下降,而320℃重新热处理可以改善这一状况。 |
| 英文摘要: |
| LF6M aluminum alloys annealed at 220℃ were retreated at 320℃. The influence of annealing temperature on microstructure of LF6M aluminum alloy substrates and anodic oxide coatings formed in sulfuric acid solution was studied. The anodic behavior of LF6M alloys in sulfuric acid solution was researched using potentiodynamic polarization curves.β-phase particles concentrated in grain boundaries of LF6M alloys annealed at 220℃, but distributed equably in grains and boundaries for alloys treated at320℃.β-phase particles dissoluted preferentially during anodic oxidation and cavities formedin the films on both annealing condition.For LF6Malloys annealed at220℃, larger cavities were caused by preferential dissolution ofβ-phase particles along grain boundaries,which lead to the decline of the oxide films'corrosion resistance. However, retreatment at 320 ℃ could restrain the formation of larger cavities in the oxide films. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501715号