球磨法和搅拌铸造法制备SiCp/Al复合材料  

Preparation of SiCp/Al MMCs by Ball Milling and Stir Casting

作　　者：金兰[1] 盖国胜[1] 李建国[1] 杨玉芬[1] 何迁[1] 刘向兵[2] 

机构地区：[1]清华大学教育部先进材料重点实验室,粉体工程研究室,北京100086 [2]北京科技大学,北京100083

出　　处：《稀有金属材料与工程》2009年第A01期557-562,共6页Rare Metal Materials and Engineering

基　　金：广东省产学研项目(0712226100053)

摘　　要：用高能球磨法制备出SiC-Al复合粉体,再把复合粉体搅拌弥散到Al熔液中,浇铸制得0.5%、1.0%、1.5%(质量分数,下同)SiCp/Al复合材料。制备出的复合材料与未经增强的铝材相比,其抗拉强度分别提高:46.8%、63.8%、34.0%,硬度分别提高:99.1%、116.1%、67.9%。在SiC添加质量分数相同的情况下,添加复合粉的浇铸体与直接添加SiC粉体的浇铸体相比,前者的抗拉强度和硬度高于后者,说明SiC粉和Al粉复合后更容易弥散到Al熔液中。SiC-Al composite powder was fabricated by high-energy ball milling. Then it was added into molten aluminum by stirring to obtain particle reinforced aluminium matrix composites （AMCs） with SiC weight fractions of 0.5%, 1.0% and 1.5%. The tensile strength and Vickers-hardness of these AMCs turned out to be higher than that of unreinforced aluminum by 46.8%, 63.8%, 34.0% and 99.1%, 116.1%, 67.9%, respectively. With the same SiC additional ratio, the AMCs reinforced with composite powder had higher tensile strength and Vickers-hardness than the AMCs reinforced with pure SiC powder by 26.0% and 38.2%, respectively, which means that SiC particles are more easily dispersed into molten aluminum after adding composite powder.

关 键 词：铝基复合材料:机械分散 高能球磨 搅拌铸造 

分 类 号：TB331[一般工业技术—材料科学与工程]