摘要
采用OM、SEM、XRD等分析方法,研究Al65Cu23Fe12合金在铸态及退火后的显微组织及相结构,并用微氏硬度计测试了其显微硬度。结果表明:铸态下Al65Cu23Fe12合金主要由λ相、β相、准晶I相及微量的θ相组成;经过退火后Al65Cu23Fe12合金组织中相的变化主要表现在β相、λ相的减少及准晶I相的生成与增加,尤其是经过800℃×8h退火,β、λ相完全转化为准晶I相;铸态下Al65Cu23Fe12合金的硬度先随退火温度的升高而增加,当退火温度达到一定值后,硬度又随退火温度的升高而下降,而且温度越高,硬度下降的趋势越大。
Microstructures and constituent phases of Al65Cu23Fe12 alloy, in both as cast state and subsequent annealed state, were studied by means of OM, SEM, XRD etc, and its microhardness was measured by micro-sclermeter. This study showed that as-cast Al65Cu23Fe12 alloy was composed of λ、β,quasicrystalline Ⅰ and a little e phases. During annealing, phases transformation of Al65Cu23Fe12 alloy focused to the decreasing of λ、β phases and the increasing of quasicrystalline Ⅰ phase. Especially, after annealing at 800 ℃ × 8 h, λ、β transformated completely into Ⅰ phase. Microhardness of Al65Cu23Fe12 alloy increasd with temperature at the beginning. However, when temperature increased to an extent, microhardness decreased with temperature, and the higher the temperature, more decreasing the microhardness.
出处
《铸造技术》
EI
CAS
北大核心
2006年第3期227-229,共3页
Foundry Technology
基金
西安理工大学科技创新计划项目
陕西省自然科学研究计划项目(2003E111)
