Correlation between pre-peak in structure factor and physical properties in Al-based amorphous alloys  

铝基非晶合金中预峰与物理性能的关系(英文)

作　　者：李瑞[1] 王伟民[1] 马海健[1] 李桂华[1] 秦敬玉[1] 张忠华[1] 唐兴伟[1] 

机构地区：[1]山东大学材料液固结构演变与加工教育部重点实验室,济南250061

出　　处：《Transactions of Nonferrous Metals Society of China》2011年第1期80-87,共8页中国有色金属学报（英文版）

基　　金：Projects(50871061,50871062,50831003 and 50631010)supported by the National Natural Science Foundation of China;Project(2008BS04020)supported by the Excellent Youth Science and Technology Award of Shandong Province,China;Project(NCET-06-584)supported by the New Century Talents Program of the Ministry of Education,China;Project(2007CB613901)supported by the National Basic Research Program of China;Project(LZUMMM2010008)supported by Open Project of Key Laboratory for Magnetism Materials of the Ministry of Education,China

摘　　要：To study the influence of Fe addition on the Al-based amorphous alloys,the structure and properties of Al84Ni10La6 and Al84Ni9Fe1La6 alloys were investigated through various techniques.The results show that 1% Fe（molar fraction） addition increases the area of the pre-peak in the structure factor and decreases the thermal expansion coefficient difference between the crystalline and amorphous states.1% Fe addition also improves the glass forming ability（GFA）,micro-hardness,fracture toughness,electric resistivity,absolute diamagnetism and corrosion resistance of Al-Ni-La alloys,which is related to the changes of medium-range order and quench-in free volume caused by 1% Fe addition.为了研究Fe对Al基非晶合金的影响,通过各种技术对Al84Ni10La6和Al84Ni9Fe1La6的结构与性能进行了研究。结果表明:加入1%Fe(摩尔分数)增加了结构因子中预峰的面积并降低了晶态与非晶态热膨胀系数之间的差异;加入1%Fe提高了Al-Ni-La合金的非晶形成能力、显微硬度、断裂韧性、电阻率、抗磁性和耐腐蚀性,这是由添加1%Fe引起的中程序及自由体积的变化导致的。

关 键 词：Al-based amorphous medium-range order free volume MAGNETISM corrosion resistance 

分 类 号：TG139.8[一般工业技术—材料科学与工程]