DSC Analysis of LT-3 Aluminum Alloy Vacuum Brazing

作     者：冯涛 吴鲁海 楼松年 李亚江 FENG Tao~(1*) WU Lu-hai~1 LOU Song-nian~1 LI Ya-jiang~2(1. School of Materials Science and Eng., Shanghai Jiaotong Univ., Shanghai 200030, China;2. School of Materials Science and Eng., Shandong Univ., Ji’nan 250061)

作者机构：School of Materials Science and Eng. Shanghai Jiaotong Univ. Shanghai 200030 China School of Materials Science and Eng. Shandong Univ. Ji'nan 250061 

出 版 物：《Journal of Shanghai Jiaotong university(Science)》 (上海交通大学学报（英文版）)

年 卷 期：2005年第10卷第2期

页      面：182-185,189页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：aluminum alloy differential scanning calorimeter(DSC) analysis critical nucleation 

摘      要：LT-3 aluminum alloy is a kind of two-side cladding aluminum special used in vacuum brazing. Differential Scanning Calorimeter （DSC） was used to measure the exothermic and endothermic reaction during the brazing process that the cortex metal and the base metal are melted and re-crystal. The analysis results inidicate that eutectic reaction is the main reaction in the melted cortex metal crystallization process. But the main reaction in the melted base metal crystallization process is the reaction that α-A1 segregated out. According to the experimental details, the critical work of nucleation is 3.82×10-17J, the critical radius of nucleation is 8.69×10-10 m, the volume of critical crystal nucleus is 2.75×10-27 m3 and the per unit cell in critical crystal nucleus is 43.