摘要
采用电化学分析、显微金相和图象分析、力学性能测量方法,研究了纯铝中夹杂物含量以及夹杂物形态对组织、电化学性能和力学性能的影响。得出腐蚀电位Ecorr、腐蚀电流密度Icorr和纯铝中夹杂物含量的关系;测试了不同夹杂物含量的工业纯铝的硬度和延展性。试验结果表明:铝屑引入了大量的夹杂物,纯铝中夹杂物含量随着铝屑的增加而增多;试验材料的腐蚀电位逐渐向负方向移动,腐蚀电流密度变大,表明材料耐腐蚀性能随着夹杂物的增加而下降;材料的硬度有轻微增加,延展性降低,塑性变差。
The effects of the morphology and content of inclusions on microstructure, electrochemical and mechanical properties of pure aluminum were investigated by using of electrochemical measurement, optical microscope （OM） image analysis, and mechanical test. The relationship of corrosion potential Ecorr and corrosion current density Icorr with inclusion content was obtained. The HV hardness test and the ductility comparison of the materials with inclusion content were conducted. The results show that the addition of aluminum scraps introduces a large number of inclusions. With the increasing of aluminum scraps, the corrosion potentials of the material move to more negative direction, the inclusion content and corrosion current density increases. The hardness increases to some extent with the increasing of aluminum scraps, while the ductility decreases with the increase of inclusions content.
出处
《铸造》
CAS
CSCD
北大核心
2009年第8期827-830,共4页
Foundry
基金
国家自然科学基金资助项目(50864002)
广西自然科学基金资助项目(桂科配0991001)
广西大学科研基金项目(X071081)
关键词
工业纯铝
夹杂物
组织
电化学性能
力学性能
industrial pure aluminum
inclusions
microstructure
electrochemical properties
mechanical properties
