摘要
熔制了Al Zn Cu系的13个不同成分的合金,并进行了组织均匀化和平衡冷却至200℃的缓冷处理。通过显微组织观察、X射线衍射分析和电子探针微区成分分析,测定了这13个合金的相组成及成分。结果表明,在200℃时,富铝角α相的Zn、Cu、Al含量(摩尔分数)分别为6.7%、2.0%和91.3%,确定了T′相的成分范围以及Al2Cu3相中Zn的溶解度(摩尔分数)小于4.4%,绘制出了Al Zn Cu系200℃低Cu侧的等温截面相图。
The phase composition and constituent of 13 designed alloys in Al-Zn-Cu system were analyzed by optical microscope, X-ray diffraction and EPMA method. These samples were prepared through sufficient homogenization and equilibrium cooling heat treatment from 400 ℃ to 200 ℃. The results show that the contents(in mole fraction) of Zn, Cu and Al of α phase ( rich aluminum phase) at 200 ℃ are 6.7%, 2.0% and 91.3% respectively. The composition range of T′ phase was determined and the solubility(in mole fraction) of Zn in Al_2Cu_3 is less than (4.4%.) The isothermal section diagram of Al-Zn-Cu system on lower copper side at 200 ℃ was constructed.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2004年第6期912-916,共5页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目(50171019)
