机械合金化制备的Al-Pb-Cu合金结构与摩擦性能  

MICROSTRUCTURE AND WEAR PROPERTIES OF Al-Pb-Cu ALLOY SYNTHESIZED BY MECHANICALLY ALLOYING

作　　者：曾美琴[1] 张 耀[1] 欧阳柳章[1] 罗堪昌[1] 朱 敏[1] 

机构地区：[1]华南理工大学机电工程系,广州510640

出　　处：《金属学报》2002年第8期814-818,共5页Acta Metallurgica Sinica

基　　金：国家杰出青年科学基金资助项目 59925102

摘　　要：用机械合金化方法制备了Al-Pb-Cu合金.X射线衍射（XRD）和扫描电镜（SEM）分析表明,随机械合金化的进行,Al-Pb-Cu合金中相继有Cu9Al4和CuAl2相形成,在随后的烧结过程中,CuAl2相逐渐增加,而Cu9Al4相逐渐消失,最终获得了在Al基体上弥散分布有Pb相和CuAl2相的组织结构,与Al-Pb二元合金相比,Cu的加入在一定程度上抑制了Pb相的长大.摩擦磨损性能测定表明,Al-Pb-Cu合金的摩擦磨损性能比相同方法制备的Al-Pb二元合金有了较大提高,当Cu含量（质量分数）为4.5％时,合金的耐磨性最佳.The Al-Pb-Cu alloy was prepared by mechanically alloying. X-ray diffraction and scanning electron microscopy analyses revealed that Cu9Al4 and CuAl2 phases formed during the process of mechanically alloying. The amount of CuAl2 phases increased and Cu9Al4 phases disappeared gradually during subsequently sintering. Al-Pb-Cu alloys with microstructure of very fine Pb particles and CuAl2 phases distributed homogeneously in the Al matrix can be obtained finally. It was observed that the growth of Pb phase was prohibited by rich Cu phases formed by Cu addition. The wear properties of prepared Al-Pb-Cu alloy are much better than those of Al-Pb alloy prepared under the same condition. The wear property reached to the optimum value when Cu content is about 4.5 (mass fraction, %).

关 键 词：机械合金化 Al-Pb-Cu合金 摩擦 磨损 铝合金 结构 性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程]