摘要
采用光学显微镜、差热分析、扫描电镜、能谱分析,研究了Al-4.3Zn-1.4Mg合金的铸态组织以及铸锭经不同均匀化制度处理后的微观组织。结果表明,Al-4.3Zn-1.4Mg合金的铸态组织中主要存在T相、Mg2Si相和AlFeMn相三种结晶相;铸锭过烧温度为479℃;铸锭经均匀化处理后,T相及Mg2Si相均回溶入基体,而主要含AlFeMn的过剩结晶相仅发生部分溶解。
The casting microstructure and microstructure after the billet being homogenized with different processes have been investigated by optical microscope,differential scanning calorimeter and energy spectrometer;the results show that in the casting microstructure of Al-4.3Zn-1.4Mg alloy billet exist three crystal phases,as T phase,Mg2Si and AlFeMn phase.The overheat temperature is 479℃;T phase and Mg2Si phase re-smelted into the base;but the excess crystal phase containing AlFeMn re-smelted only partially.
出处
《轻合金加工技术》
CAS
北大核心
2010年第12期13-16,共4页
Light Alloy Fabrication Technology
基金
国家高技术研究发展计划项目(2008AA030701)
