铸造技术2012，Vol.33Issue(7)：830-833,4.
A357合金夹杂物的形态分析
Analysis on Inclusions Morphology in A357 Alloy Melting
摘要
Abstract
The optical microscope (OM), scanning electric microscope (SEM), energy dispersive spectrometer (EDS) and Atomic Force microscope (AFM) were used to characters the floating scum of melt surface. The morphology, microstructure, and inclusions composition of these floating scum were investigated. The results show that the floating scum of melt surface includes AI2O,, MgO or MgAljO,, ZnO, SiOj, and small amount of Fe phase, also includes the complicated Ca phase ofCa-Si-O. The oxide film of melt surface contains many micro-cracks and spherical pits that result from the transformation of -y-AljO, to o-AliOj and a-AlzO3 peeling off. The features like strip and floe are porous oxide inclusions with different properties contrasted to matrix metal in AFM analysis images.关键词
A357合金/夹杂物/形态/分析Key words
A357 alloy/ inclusions/ morphology/ analysis分类
金属材料引用本文复制引用
邹勇志,许征兵,庞兴志,曾建民..A357合金夹杂物的形态分析[J].铸造技术,2012,33(7):830-833,4.基金项目
国家自然科学基金项目(No.51D64003) （No.51D64003）
广西大学有色金属及加工新技术教育部重点实验室开放基金项目(GXKFJ09-08,GXKFJ-12) （GXKFJ09-08,GXKFJ-12）
