快速凝固Al─Fe基合金条带中准晶相的形成及稳定性  

FORMATION AND STABILITY OF QUASICRYSTALLINE PHASE IN RS Al-Fe BASED ALLOY RIBBON

作　　者：关绍康[1] 汤亚力 沈宁福[1] 胡汉起[1] 

机构地区：[1]郑州工学院,北京科技大学

出　　处：《金属学报》1994年第4期A150-A154,共5页Acta Metallurgica Sinica

基　　金：国家863高技术资助

摘　　要：对快速凝固Ａｌ─Ｆｅ基合金的原始条带及退火组织进行了透射电镜分析．结果表明．原始条带截面组织按准晶形成可分成三个区域：无准晶区；准晶形成区；准晶分解区，在６９８Ｋ保温１ｈ发现中间区的准晶开始晶化．组织形貌类同铸态组织的准晶分解区，说明准晶的晶化是在凝固过程中进行的。The microstructures of as-cast and annealed ribbons of the RS Al-Fe based alloys have been studied by TEM and energy dispersive X-ray spectrometer. Microstructure of the cross-section ribbons revealed as three areas: with or without quasicrystalline phase and with decomposed quasicrystalline particles.The quasicrystalline in the middle area began to crystallize during annealing at 698 K for 1 h and the resultant microstructure is similar to that of as-cast free-side section,indicating that the crystallization of quasicrystalline phase occurred during solidification and at the interface between quasicrystalline phase and matrix.

关 键 词：快速凝固 准晶相 铝铁基合金 

分 类 号：TG146.21[一般工业技术—材料科学与工程]