摘要
研究了温度变化对ZM 5镁合金表面扩渗层组织特征的影响。研究结果表明 :在实验的温度范围内 ,表面扩渗层由Mg -Al-Zn固溶体和Mg -Al-Zn金属间化合物组成 ;扩渗层的组织形貌随着温度的变化而改变。随扩散温度的升高 ,扩渗层中Mg -Al-Zn固溶体区域层逐渐变宽 ,Mg -Al-Zn金属间化合物的析出量明显增加 ,且分布形貌有由不连续向连续、条状向网状变化的趋势。较低温度时 ,Mg -Al-Zn金属间化合物仅沿试样表面析出 ;较高温度时 ,Mg -Al-Zn金属间化合物不仅沿试样表面析出 ,并以网状分布的形式向基体内部延伸。
In this study, under given experimental condition, different diffusion temperature have been taken out to explore the effect of different diffusion temperature on the microstructure character of surface diffusion layer of ZM5 Magnesium alloy. The results shown that the Mg-Al-Zn solid solution and the Mg-Al-Zn intermetallic compounds consist of the surface diffusion layer. The microstructure morphology of the surface diffusion layer would vary with the change of diffusion temperature. With the rise of diffusion temperature, the width of the transition zone was wider and wider; the quantities of the Mg-Al-Zn intermetallic compounds increased and its distribution morphology had the tendencies from discontinue to continue and from strip-like to netlike. At lower temperature, the Mg-Al-Zn intermetallic compounds only precipitated along the surface; at higher temperature, the Mg-Al-Zn intermetallic compounds not only precipitated along the surface but also stretched into the substrate by the way of netlike.
出处
《兵器材料科学与工程》
CAS
CSCD
2004年第2期33-35,49,共4页
Ordnance Material Science and Engineering
基金
陕西省科技厅攻关项目 ( 2 0 0 1K0 7-G1)
陕西省教育厅项目 ( 0 1ZC17)
西安市科技局项目 (GG2 0 0 3 46)
关键词
温度变化
ZM5镁合金
温度
组织
表面扩渗层
ZM5 magnesium alloy
temperature
microstructure
surface diffusion layer
