不同Al含量Cu-Al合金内氧化后的组织对比
Comparative analysis of internal oxidation microstructure of Cu-Al alloy with different Al content
李玉娟 1任凤章 1王晓伟 2李炎 1魏世忠1
作者信息
- 1. 河南科技大学材料科学与工程学院,河南洛阳471023
- 2. 中航光电科技股份有限公司连接技术研究院,河南洛阳471003
- 折叠
摘要
不同Al含量(0.16％、0.3％和0.5％)的Cu-Al合金薄板使用Cu2O粉末包埋法内氧化,制备Cu-Al2O3弥散强化铜合金,并对其微观组织进行分析.结果表明,合金的内氧化层表层晶粒均比内部晶粒明显细小,表面晶粒为5 ～ 30μm,内部晶粒为30 ～ 100 μin;随内氧化时间增加,内氧化层深增加,但随Al含量增加而减小;内氧化层的微观组织为大量细小-γ-Al2O3相弥散分布在铜基体上;内氧化层表层γ-Al2O3粒子大小为20 ～ 50 nm,间距为50～150 nm,γ-Al2O3粒子与基体Cu的界面匹配关系是(022)Cu//(220)γ,为共格界面.
Abstract
Internal oxidation of Cu-Al alloy with different Al content (0.16％ 、0.3％ and 0.5％) was carried out in Cu2O powder oxidizer.The microstructure of Cu-Al2O3 composites was investigated by metallurgical microscope and transmission electron microscope (TEM).The results show that after internal oxidation,the grains of surface layer of the alloy are smaller than that of inside layer.The surface grain size is 5-30 μm,while the inside grain size is 30-100 μm.Internal oxidation depth of the alloy increases gradually with increasing of oxidation time,but decreases with increasing of A1 content.Lots of small γ-Al2O3 particles with diameter size of about 20-50 nm and particle spacing of 50-150 nm distribute dispersedly in Cu matrix.The two phases between γ-Al2O3 and Cu matrix have a semicoherent relationship of (022) Cu//(220) γ.
关键词
弥散强化/Cu-Al2O3复合材料/内氧化法/显微组织Key words
dispersion strengthening/Cu-Al2O3 composite/internal oxidation/microstructure引用本文复制引用
基金项目
国家自然科学基金(51201061)
长江学者和创新团队发展计划项目(IRT1234)
河南省科技创新人才计划(144200510001)
河南省重点攻关项目(092102210012)
出版年
2014
NETL
NSTL
维普
万方数据