Effect of Compression on the Crystallization Behavior and Corrosion Resistance of Al_(86)Ni_9La_5 Amorphous Alloy  

作　　者：Yan Liu Weimin Wang Hongdi Zhang Haitian Ma Bang An 

机构地区：[1]Key Laboratory for Liquid-solid Structural Evolution and Processing of Materials, Shandong University, Jinan 250061, China [2]Department of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, China

出　　处：《Journal of Materials Science & Technology》2012年第12期1102-1108,共7页材料科学技术（英文版）

基　　金：supported by the National BaSiC Research Program of China ("973 Program", No.2012CB825702);the National Natural Science Foundation of China (Nos. 50871061 and 51171091);the Shandong Excellent Youth Award Foundation, China (No.2008BS04020);the Excellent Youth Project of Shandong Natural Science Foundation, China (No. JQ201012)

摘　　要：The effect of compression on the crystallization behavior and corrosion resistance of Al（86）Ni9La5 amorphous ribbons was investigated by X-ray diffraction （XRD）, transmission electron microscopy （TEM）, scanning elec-tron microscopy （SEM） and electrochemistry test. The XRD and TEM results reveal that the compressed Al（86）Ni9La5 ribbons spun with the circumferential speed （R） of 29.3 m/s are in fully amorphous state; however, the compressed ribbons spun with R=14.7 m/s have crystalline phases embedded in the amorphous matrix. The SEM images indicate that after compression, the toughness of the ribbons increases. Electrochemical results show that the compression decreases the stability of the passive film of the Al（86）Ni9La5 amorphous ribbons, because of the compression-introduced free volume, shear bands and crystalline phases; meanwhile, with R=14.7 m/s, the compression-induced crystalline phases in the Al（86）Ni9La5 ribbons increase the corrosion potential.The effect of compression on the crystallization behavior and corrosion resistance of Al（86）Ni9La5 amorphous ribbons was investigated by X-ray diffraction （XRD）, transmission electron microscopy （TEM）, scanning elec-tron microscopy （SEM） and electrochemistry test. The XRD and TEM results reveal that the compressed Al（86）Ni9La5 ribbons spun with the circumferential speed （R） of 29.3 m/s are in fully amorphous state; however, the compressed ribbons spun with R=14.7 m/s have crystalline phases embedded in the amorphous matrix. The SEM images indicate that after compression, the toughness of the ribbons increases. Electrochemical results show that the compression decreases the stability of the passive film of the Al（86）Ni9La5 amorphous ribbons, because of the compression-introduced free volume, shear bands and crystalline phases; meanwhile, with R=14.7 m/s, the compression-induced crystalline phases in the Al（86）Ni9La5 ribbons increase the corrosion potential.

关 键 词：Compression Crystallization Corrosion resistance Quenched-in nuclei 

分 类 号：TG139.8[一般工业技术—材料科学与工程] TN919.81[金属学及工艺—合金]