摘要
通过机械合金化法制备了Ａｌ９４Ｖ４Ｆｅ２ 合金粉末， 该粉末由纳米尺寸的ｆｃｃＡｌ 相及非晶颗粒组成， 两者的尺寸分别为７ｎｍ 和１０ ｎｍ 。应用ＤＴＡ 方法检测合金粉末的热稳定性。合金粉末从非平衡相向平衡相转变经历了两个阶段。制备具有非晶颗粒和纳米ｆｃｃＡｌ 相共存结构的合金粉末的最佳工艺条件为４０∶１ 的球料比加７２ ｈ
Alloy powder consisting of nanoscale amorphous particles plus fcc Al phase has been prepared in Al 94 V 4Fe 2 by mechanically alloying, the sizes of amorphous and fcc Al phase particles are about 10 nm and 7 nm, respectively. The thermal stability of the nanoscale amorphous particles in coexistence with the Al phase was examined by DTA. The phase transition of that non equilibrium phase transiting into equilibrium mixture appears to take place through two stages, i.e. fcc Al+amorphous→fcc Al+quasicrystal+X phase→fcc Al+Al 11 V+X′ phase. The best processing parameter for achieving amorphous and nanoscale fcc Al phase mixed powders are 40∶1 ball to powder mass ratio plus 72 h milling.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
1999年第A01期195-198,共4页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金
关键词
Al-V-Fe合金
纳米晶
纳米非晶结构
机械合金化
nanophase alloy aluminum vanadium iron alloy nanocrystal nanoamorphous structure mechanically alloying
